133 Cooling system parts are listed for the 1996 Buick Riviera, in 20 part types, covering both the 3.8L V6 and the 3.8L V6 Supercharged. Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 1996 Buick Riviera, the cooling system system keeps operating temperature in the narrow band the engine was designed for, from radiator and water pump to thermostat and hoses. Most of the listed parts are Coolant / Antifreeze (15 parts), Temperature Sender / Sensor (15 parts) and Thermostat (13 parts). The other 17 part types cover the remaining 90 parts.
The 1996 Buick Riviera was sold with both the 3.8L V6 and the 3.8L V6 Supercharged. 89 parts fit every engine; the other 44 are engine-specific. Each part shows which engine(s) it fits.
39 brands supply cooling system parts for the 1996 Buick Riviera, led by MOTORAD (15 parts), ACDELCO (10 parts) and GATES (9 parts), plus 36 more brands. Quality grades include Standard Replacement, Economy and Premium.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 1996 Buick Riviera. 27 parts have it, including FVP MV5050GAL (Coolant / Antifreeze) and AGILITY 8011777 (Radiator). Each part number opens a page with every vehicle that part fits.
Coolant / Antifreeze
Compatible With All Colors
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Fits: all 1996 Riviera engines | AF3055 | 🇺🇸 US 🇨🇦 CA | Prime YellowAll Vehicles | View on Amazon |
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FVP Popular Fits: all 1996 Riviera engines | MV5050GAL | 🇺🇸 US 🇨🇦 CA | Extended LifeAll Makes / All Models | View on Amazon |
| PEAK Fits: all 1996 Riviera engines | BQA1GAL | 🇺🇸 US 🇨🇦 CA | Blue Mountain Long LifeAll Vehicle | View on Amazon |
| PRESTONE Fits: all 1996 Riviera engines | AF3100 | 🇺🇸 US 🇨🇦 CA | Prime Yellow - All VehiclesExtended Life | View on Amazon |
| VALVOLINE Fits: all 1996 Riviera engines | 719009 | 🇺🇸 US 🇨🇦 CA | Multi-Vehicle Yellow1 Gallon | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Popular Fits: all 1996 Riviera engines | AF2100 | 🇺🇸 US 🇨🇦 CA | All Vehicles10yr/300k mi | View on Amazon |
| PEAK Fits: all 1996 Riviera engines | PKP1GAL | 🇺🇸 US 🇨🇦 CA | All Vehicles Antifreeze1 Gallon | View on Amazon |
| PEAK Fits: all 1996 Riviera engines | PXA1GAL | 🇺🇸 US 🇨🇦 CA | 1 GallonGlobal Lifetime | View on Amazon |
| PRESTONE Fits: all 1996 Riviera engines | AFMAX | 🇺🇸 US 🇨🇦 CA | Max Universal1 Gallon | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE Popular Fits: all 1996 Riviera engines | ZXEL1 | 🇺🇸 US 🇨🇦 CA | Dex-Cool Orange1 Gallon | View on Amazon |
| ACDELCO Fits: all 1996 Riviera engines | 105027 | 🇺🇸 US 🇨🇦 CA | DEX-Cool Extended LifeDexcool (with DE-Ionized Water) (with Bitterant) 1 Gallon | View on Amazon |
| AISIN Fits: all 1996 Riviera engines | ACD005 | 🇺🇸 US 🇨🇦 CA | OrangeOAT | View on Amazon |
| FVP Fits: all 1996 Riviera engines | DEX5050GAL | 🇺🇸 US 🇨🇦 CA | Extended Life Blend1 Gallon | View on Amazon |
| PRESTONE Fits: all 1996 Riviera engines | AF3400 | 🇺🇸 US 🇨🇦 CA | Prime OrangeOrange Compatible | View on Amazon |
| PRESTONE Fits: all 1996 Riviera engines | AF850 | 🇺🇸 US 🇨🇦 CA | DEX-Cool Extended Life1 Gallon | View on Amazon |
This table covers the engine coolants and antifreeze formulations specified for this cooling system. Typical signs include a rising temperature gauge, rusty or sludged coolant, or a heater that blows cold. Use the chemistry named in the notes. Mixing silicate, OAT and HOAT formulas can gel in the radiator.
15 Coolant / Antifreeze parts are listed for the 1996 Buick Riviera, from PRESTONE, PEAK, FVP and 3 other brands. FVP MV5050GAL carries the "Popular" badge. All of them fit every engine offered in the 1996 Riviera.
The Compatible With All Colors section lists 1 option from PRESTONE — grouped under the catalog's "Compatible With All Colors" designation — the notes column spells out what sets them apart. PRESTONE AF3055 is listed in this group.
In the Economy grade, FVP, PEAK, PRESTONE and 1 other brand supply 4 parts: the catalog's value-priced group. A representative part number is FVP MV5050GAL.
The Premium section lists 4 options from PRESTONE and PEAK — a step above OE specification in materials, tolerances or warranty terms. PRESTONE AF2100 is listed in this group.
The Standard Replacement section lists 6 options from PRESTONE, VALVOLINE, ACDELCO and 2 other brands — built to original-equipment specification. VALVOLINE ZXEL1 is listed in this group.
Coolant Hose / Pipe
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Fits: all 1996 Riviera engines | 14108S | 🇺🇸 US 🇨🇦 CA | Professional / GoldMolded | View on Amazon |
| GATES Fits: all 1996 Riviera engines | 18801 | 🇺🇸 US 🇨🇦 CA | Molded5/8" x 7 1/2" | View on Amazon |
| GM GENUINE Fits: all 1996 Riviera engines | 24503423 | 🇺🇸 US 🇨🇦 CA | to lower intake manifold.Thermostat Bypass | View on Amazon |
This table covers the hard pipes and extra hoses in the coolant circuit.
3 Coolant Hose / Pipe parts are listed for the 1996 Buick Riviera, from ACDELCO, GATES and GM GENUINE. All of them fit every engine offered in the 1996 Riviera.
Part numbers include ACDELCO 14108S, GATES 18801 and GM GENUINE 24503423.
Coolant Hose / Pipe Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO Fits: all 1996 Riviera engines | 36021 | 🇺🇸 US 🇨🇦 CA | Water Bypass Seal | View on Amazon |
| GM GENUINE Fits: all 1996 Riviera engines | 1534066 | 🇺🇸 US 🇨🇦 CA | 0.674" Diameter | View on Amazon |
| GM GENUINE Fits: 3.8L V6 Supercharged | 24501563 | 🇺🇸 US 🇨🇦 CA | Fits OutletThrottle Body Heater Hos | View on Amazon |
| MAHLE / CLEVITE Fits: all 1996 Riviera engines | C31274 | 🇺🇸 US 🇨🇦 CA | Paper | View on Amazon |
This table covers the seals at the Coolant Hose / Pipe. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.
4 Coolant Hose / Pipe Seal parts for the 1996 Buick Riviera come from 3 brands — GM GENUINE, FEL-PRO and MAHLE / CLEVITE. 3 parts fit every engine; the other 1 is engine-specific.
Part numbers include FEL-PRO 36021, GM GENUINE 1534066 and GM GENUINE 24501563, among others listed above.
Coolant Hose Connector / Flange
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FOUR SEASONS Fits: all 1996 Riviera engines | 86500 | 🇺🇸 US 🇨🇦 CA | Coolant Coupling | View on Amazon |
This table covers the Coolant Hose Connector flanges.
One part is listed for the 1996 Buick Riviera — FOUR SEASONS 86500.
Coolant Hose Retainer / Clip
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: all 1996 Riviera engines | 961364 | 🇺🇸 US 🇨🇦 CA | Air Box Clip | View on Amazon |
This table covers the Coolant Hose retainers and clips.
One part is listed for the 1996 Buick Riviera — DORMAN 961364.
Coolant Level Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FAMOUS BRAND Fits: all 1996 Riviera engines | SBA3759 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| GPD Fits: all 1996 Riviera engines | 1712533 | 🇺🇸 US 🇨🇦 CA | Engine Coolant Level Sensor | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 1996 Riviera engines | FLS17 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WELLS Fits: all 1996 Riviera engines | 5S1453 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the Coolant Level sensors. Typical signs include a warning lamp, a stored code, or a reading that drops out when the harness is wiggled. Inspect the connector and ground before replacing the sensor — wiring faults are often condemned as bad sensors.
4 Coolant Level Sensor parts are listed for the 1996 Buick Riviera, from FAMOUS BRAND, GPD, STANDARD MOTOR PRODUCTS and 1 other brand. All of them fit every engine offered in the 1996 Riviera.
This group includes FAMOUS BRAND SBA3759, GPD 1712533 and STANDARD MOTOR PRODUCTS FLS17 and the remaining parts above.
Coolant Reservoir Cap
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: all 1996 Riviera engines | 54217 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the caps on the overflow / expansion tank. Typical signs include a leak at the neck, a cap that will not hold pressure, or a missing tether. Match the pressure rating or thread in the notes — radiator, reservoir and fuel caps are not interchangeable.
This group shows a single part: DORMAN 54217.
Cooling Fan Control Module
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| US MOTOR WORKS Fits: all 1996 Riviera engines | 16789 | 🇺🇸 US 🇨🇦 CA | Better Control | View on Amazon |
| US MOTOR WORKS Fits: all 1996 Riviera engines | 16795 | 🇺🇸 US 🇨🇦 CA | Best Control | View on Amazon |
This table covers the Cooling Fan control modules.
2 Cooling Fan Control Module parts for the 1996 Buick Riviera come from US MOTOR WORKS. Every part fits both the 3.8L V6 and the 3.8L V6 Supercharged.
This group includes US MOTOR WORKS 16789 and US MOTOR WORKS 16795.
Cooling System Tester Adapter
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Fits: all 1996 Riviera engines | 12A01 | 🇺🇸 US 🇨🇦 CA | ProfessionalIncluded In Tester | View on Amazon |
| GATES Fits: all 1996 Riviera engines | 31413 | 🇺🇸 US 🇨🇦 CA | Cooling System PressureRadiator Cap | View on Amazon |
| MOTORAD Fits: all 1996 Riviera engines | 3003 | 🇺🇸 US 🇨🇦 CA | StandardIncluded In Tester Kit | View on Amazon |
This table covers the adapters used to pressure-test this cooling system.
3 Cooling System Tester Adapter parts are listed for the 1996 Buick Riviera, from ACDELCO, GATES and MOTORAD. All of them fit every engine offered in the 1996 Riviera.
This group includes ACDELCO 12A01, GATES 31413 and MOTORAD 3003.
Radiator
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GPD Fits: all 1996 Riviera engines | 1777C | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| TECHPRO Fits: all 1996 Riviera engines | GM3010133 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| TECHPRO Fits: all 1996 Riviera engines | GM3010134 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AGILITY Popular Fits: all 1996 Riviera engines | 8011777 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| FVP Fits: all 1996 Riviera engines | RAD1779 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| OSC Fits: all 1996 Riviera engines | 1779 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the radiators that dump engine heat to airflow through the core. Typical signs include overheating in traffic, a wet core, or coolant that disappears with no puddle. Replace the cap if it cannot hold the rated pressure, and bleed the system after the swap.
6 Radiator parts are listed for the 1996 Buick Riviera, from TECHPRO, GPD, AGILITY and 2 other brands. AGILITY 8011777 carries the "Popular" badge. All of them fit every engine offered in the 1996 Riviera.
Economy: 3 parts, from TECHPRO and GPD. A representative part number is GPD 1777C.
The Standard Replacement section: 3 options from AGILITY, FVP and OSC. AGILITY 8011777 is listed in this group.
Part numbers include AGILITY 8011777, GPD 1777C and TECHPRO GM3010133, among others listed above.
Radiator Cap
Locking Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CALORSTAT Fits: all 1996 Riviera engines | RC0214 | 🇺🇸 US 🇨🇦 CA | PerformanceIncludes 2 seals | View on Amazon |
| CALORSTAT Fits: all 1996 Riviera engines | RC0217 | 🇺🇸 US 🇨🇦 CA | PerformanceIncludes 2 seals | View on Amazon |
| GATES Fits: all 1996 Riviera engines | 31516 | 🇺🇸 US 🇨🇦 CA | Safety Release Radiator Cap | View on Amazon |
| MOTORAD Fits: all 1996 Riviera engines | ST16V | 🇺🇸 US 🇨🇦 CA | Safety Lever | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular Fits: all 1996 Riviera engines | RC27 | 🇺🇸 US 🇨🇦 CA | GM Original Equipmentwith Handle, with Turning Ears | View on Amazon |
| GATES Popular Fits: all 1996 Riviera engines | 31523 | 🇺🇸 US 🇨🇦 CA | OE Type | View on Amazon |
| CALORSTAT Fits: all 1996 Riviera engines | RC0061 | 🇺🇸 US 🇨🇦 CA | Includes 2 sealsMetallic | View on Amazon |
| MOTORAD Fits: all 1996 Riviera engines | T16V | 🇺🇸 US 🇨🇦 CA | Standard | View on Amazon |
| SKP Fits: all 1996 Riviera engines | SK10231 | 🇺🇸 US 🇨🇦 CA | Pressure Rating 16 psi | View on Amazon |
This table covers the caps that hold system pressure at the radiator or reservoir neck. Typical signs include a leak at the neck, a cap that will not hold pressure, or a missing tether. Match the pressure rating or thread in the notes — radiator, reservoir and fuel caps are not interchangeable.
9 Radiator Cap parts are listed for the 1996 Buick Riviera, from CALORSTAT, GATES, MOTORAD and 2 other brands. ACDELCO RC27 carries the "Popular" badge. All of them fit every engine offered in the 1996 Riviera.
The Locking Replacement section lists 4 options from CALORSTAT, GATES and MOTORAD — grouped under the catalog's "Locking Replacement" designation — the notes column spells out what sets them apart. CALORSTAT RC0214 is listed in this group.
The Standard Replacement section: 5 options from ACDELCO, GATES, CALORSTAT and 2 other brands. ACDELCO RC27 is listed in this group.
Listed part numbers: ACDELCO RC27, CALORSTAT RC0214 and CALORSTAT RC0217, plus the other parts above.
Radiator Fan Assembly
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TECHPRO Fits: all 1996 Riviera engines | GM3115149 | 🇺🇸 US 🇨🇦 CA | Left | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| UAC Fits: all 1996 Riviera engines | FA50092C | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the fan assemblies (and clutches, where listed) that pull air through the radiator.
2 Radiator Fan Assembly parts for the 1996 Buick Riviera come from 2 brands — TECHPRO and UAC. Every part fits both the 3.8L V6 and the 3.8L V6 Supercharged.
The Economy section: 1 option from TECHPRO. TECHPRO GM3115149 is listed in this group.
Standard Replacement: 1 part, from UAC. A representative part number is UAC FA50092C.
This group includes TECHPRO GM3115149 and UAC FA50092C.
Radiator Fan Motor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FOUR SEASONS Popular Fits: all 1996 Riviera engines | 35656 | 🇺🇸 US 🇨🇦 CA | Left | View on Amazon |
| FOUR SEASONS Popular Fits: all 1996 Riviera engines | 35380 | 🇺🇸 US 🇨🇦 CA | Right | View on Amazon |
| ACDELCO Fits: all 1996 Riviera engines | 1580033 | 🇺🇸 US 🇨🇦 CA | Gold | View on Amazon |
| GPD Fits: all 1996 Riviera engines | 2311414 | 🇺🇸 US 🇨🇦 CA | RH | View on Amazon |
| GPD Fits: all 1996 Riviera engines | 2311317 | 🇺🇸 US 🇨🇦 CA | Driver Side | View on Amazon |
| TYC Fits: all 1996 Riviera engines | 630070 | 🇺🇸 US 🇨🇦 CA | Left | View on Amazon |
| VDO / CONTINENTAL Fits: all 1996 Riviera engines | PM517 | 🇺🇸 US 🇨🇦 CA | Passenger Side | View on Amazon |
| VDO / CONTINENTAL Fits: all 1996 Riviera engines | PM538 | 🇺🇸 US 🇨🇦 CA | Motor Diameter: 3.250 In | View on Amazon |
This table covers the Radiator Fan motors. Typical signs include no motion, a squeal, or a motor that only runs on one speed. Confirm power, ground and the control module before replacing the motor.
8 Radiator Fan Motor parts are listed for the 1996 Buick Riviera, from FOUR SEASONS, GPD, VDO / CONTINENTAL and 2 other brands. FOUR SEASONS 35656 carries the "Popular" badge. All of them fit every engine offered in the 1996 Riviera.
Listed part numbers: FOUR SEASONS 35656, FOUR SEASONS 35380 and ACDELCO 1580033, plus the other parts above.
Radiator Hose
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DAYCO Popular Fits: all 1996 Riviera engines | 71852 | 🇺🇸 US 🇨🇦 CA | Curved | View on Amazon |
| DAYCO Popular Fits: all 1996 Riviera engines | 71851 | 🇺🇸 US 🇨🇦 CA | Curved | View on Amazon |
| GATES Popular Fits: 3.8L V6 | 21361 | 🇺🇸 US 🇨🇦 CA | Molded | View on Amazon |
| ACDELCO Fits: 3.8L V6 | 24142L | 🇺🇸 US 🇨🇦 CA | Professional / GoldMolded | View on Amazon |
| ACDELCO Fits: all 1996 Riviera engines | 24326L | 🇺🇸 US 🇨🇦 CA | Professional / GoldMolded | View on Amazon |
| ACDELCO Fits: 3.8L V6 Supercharged | 22267M | 🇺🇸 US 🇨🇦 CA | Professional / GoldMolded | View on Amazon |
| CONTINENTAL Fits: all 1996 Riviera engines | 61692 | 🇺🇸 US 🇨🇦 CA | Molded | View on Amazon |
| CONTINENTAL Fits: all 1996 Riviera engines | 62152 | 🇺🇸 US 🇨🇦 CA | Molded | View on Amazon |
| GATES Fits: all 1996 Riviera engines | 22154 | 🇺🇸 US 🇨🇦 CA | Molded | View on Amazon |
This table covers the upper, lower and connecting hoses between radiator, engine and reservoir. Typical signs include swelling, cracks, a soft spot, or a leak at a clamp. Replace adjacent aged hoses while the system is drained — they share the same heat cycle.
9 Radiator Hose parts for the 1996 Buick Riviera come from 4 brands — ACDELCO, DAYCO, GATES and 1 other brand. The "Popular" part is DAYCO 71852. 6 parts fit every engine; the other 3 are engine-specific.
This group includes DAYCO 71852, DAYCO 71851 and GATES 21361 and the remaining parts above.
Temperature Sender / Sensor
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HOLSTEIN Fits: all 1996 Riviera engines | 2CTS0002 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| STANDARD MOTOR PRODUCTS Fits: all 1996 Riviera engines | TX66T | 🇺🇸 US 🇨🇦 CA | T-Series | View on Amazon |
| UNITED MOTOR PRODUCTS Fits: all 1996 Riviera engines | CTS43 | 🇺🇸 US 🇨🇦 CA | with 3 Pin Terminals | View on Amazon |
Full Service Kit
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WALKER PRODUCTS Fits: all 1996 Riviera engines | 21191039 | 🇺🇸 US 🇨🇦 CA | Full Service KitConnector Shape: Circle | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular Fits: 3.8L V6 Supercharged | 1551107 | 🇺🇸 US 🇨🇦 CA | Gold | View on Amazon |
| FOUR SEASONS Popular Fits: 3.8L V6 | 36445 | 🇺🇸 US 🇨🇦 CA | Round Connector | View on Amazon |
| FOUR SEASONS Popular Fits: 3.8L V6 Supercharged | 36403 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| GM GENUINE Popular Fits: all 1996 Riviera engines | 213815 | 🇺🇸 US 🇨🇦 CA | 3 blade terminalwith Indicator Switch | View on Amazon |
| STANDARD MOTOR PRODUCTS Popular Fits: all 1996 Riviera engines | TX66 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| BECK/ARNLEY Fits: all 1996 Riviera engines | 1580743 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| DELPHI Fits: all 1996 Riviera engines | TS10032 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| NTK Fits: all 1996 Riviera engines | EF0004 | 🇺🇸 US 🇨🇦 CA | Sensor Only | View on Amazon |
| ROSTRA Fits: all 1996 Riviera engines | 680014 | 🇺🇸 US 🇨🇦 CA | Sender | View on Amazon |
| WALKER PRODUCTS Fits: all 1996 Riviera engines | 2111039 | 🇺🇸 US 🇨🇦 CA | Sensor Only | View on Amazon |
| WELLS Fits: all 1996 Riviera engines | 1T1043 | 🇺🇸 US 🇨🇦 CA | with 3 Blade Terminalswith Gauge | View on Amazon |
This table covers the senders that report coolant temperature to the gauge or ECU. Typical signs include a gauge that sits on empty or overheat, or a lamp that does not match what the engine is doing. Rule out the cluster and the wiring before replacing the sender.
15 Temperature Sender / Sensor parts are listed for the 1996 Buick Riviera, from STANDARD MOTOR PRODUCTS, WALKER PRODUCTS, FOUR SEASONS and 9 other brands. ACDELCO 1551107 carries the "Popular" badge. 12 parts fit every engine; the other 3 are engine-specific.
Economy: 3 parts, from HOLSTEIN, STANDARD MOTOR PRODUCTS and UNITED MOTOR PRODUCTS. A representative part number is HOLSTEIN 2CTS0002.
In the Full Service Kit grade, WALKER PRODUCTS supplies 1 part: grouped under the catalog's "Full Service Kit" designation — the notes column spells out what sets them apart. A representative part number is WALKER PRODUCTS 21191039.
The Standard Replacement section: 11 options from FOUR SEASONS, ACDELCO, GM GENUINE and 7 other brands. ACDELCO 1551107 is listed in this group.
Thermostat
Heavy Duty
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORAD Popular Fits: all 1996 Riviera engines | 5239192 | 🇺🇸 US 🇨🇦 CA | Ultra Stat | View on Amazon |
| MOTORAD Fits: all 1996 Riviera engines | 5167KTUS | 🇺🇸 US 🇨🇦 CA | Includes housing, Ultra Stat thermostat and sealKit | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORAD Fits: all 1996 Riviera engines | 7203192 | 🇺🇸 US 🇨🇦 CA | Fail Safe | View on Amazon |
| MOTORAD Fits: all 1996 Riviera engines | 7239192 | 🇺🇸 US 🇨🇦 CA | Fail-Safe | View on Amazon |
| MOTORAD Fits: all 1996 Riviera engines | 7239180 | 🇺🇸 US 🇨🇦 CA | Fail-Safe | View on Amazon |
| MOTORAD Fits: all 1996 Riviera engines | 5167KTFS | 🇺🇸 US 🇨🇦 CA | Fail-SafeIncludes Housing, Gasket and Seal | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES Popular Fits: all 1996 Riviera engines | 33429 | 🇺🇸 US 🇨🇦 CA | OE Type | View on Amazon |
| GM GENUINE Popular Fits: all 1996 Riviera engines | 131115 | 🇺🇸 US 🇨🇦 CA | Includes GasketOE Temperature | View on Amazon |
| AISIN Fits: all 1996 Riviera engines | THRGM0006 | 🇺🇸 US 🇨🇦 CA | Includes Thermostat Seal | View on Amazon |
| CALORSTAT Fits: all 1996 Riviera engines | TH332882 | 🇺🇸 US 🇨🇦 CA | PerformanceDoes Not Include Seal | View on Amazon |
| MOTORAD Fits: all 1996 Riviera engines | 239180 | 🇺🇸 US 🇨🇦 CA | Standard | View on Amazon |
| MOTORAD Fits: all 1996 Riviera engines | 239192 | 🇺🇸 US 🇨🇦 CA | Standard | View on Amazon |
| MOTORAD Fits: all 1996 Riviera engines | 5167KT | 🇺🇸 US 🇨🇦 CA | Includes Housing, Thermostat, Gasket and SealKit | View on Amazon |
This table covers the thermostats that open the coolant circuit at the specified temperature. Typical signs include slow warm-up, a gauge that climbs in traffic, or heat that never quite arrives. Replace the housing gasket with the thermostat and bleed the system so a trapped air pocket does not cook the new part.
13 Thermostat parts for the 1996 Buick Riviera come from 5 brands — MOTORAD, GATES, GM GENUINE and 2 other brands. The "Popular" part is MOTORAD 5239192. Every part fits both the 3.8L V6 and the 3.8L V6 Supercharged.
In the Heavy Duty grade, MOTORAD supplies 2 parts: rated for severe service. A representative part number is MOTORAD 5239192.
Premium: 4 parts, from MOTORAD. A representative part number is MOTORAD 7203192.
Standard Replacement: 7 parts, from MOTORAD, GATES, GM GENUINE and 2 other brands. A representative part number is GATES 33429.
Thermostat / Thermostat Housing / Water Outlet Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO Popular Fits: 3.8L V6 | 35666 | 🇺🇸 US 🇨🇦 CA | 1.560 (In) Inside DiameterThermostat Seal | View on Amazon |
| GM GENUINE Popular Fits: 3.8L V6 | 24506985 | 🇺🇸 US 🇨🇦 CA | Outside Diameter 1.84"Thermostat Seal | View on Amazon |
| MAHLE / CLEVITE Popular Fits: 3.8L V6 | C31349 | 🇺🇸 US 🇨🇦 CA | Beaded Paper | View on Amazon |
| APEX Fits: 3.8L V6 | AWO2069 | 🇺🇸 US 🇨🇦 CA | Thermostat HousingThermostat Seal | View on Amazon |
| APEX Fits: 3.8L V6 | AWO2055 | 🇺🇸 US 🇨🇦 CA | Thermostat Seal | View on Amazon |
| FEL-PRO Fits: 3.8L V6 | 35595 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| GATES Fits: 3.8L V6 | 33609 | 🇺🇸 US 🇨🇦 CA | Thermostat Seal - 1 9/16" x 1 41/64" x 17/64" (Grooved, Molded) | View on Amazon |
| MAHLE / CLEVITE Fits: 3.8L V6 | C31227 | 🇺🇸 US 🇨🇦 CA | Molded Rubber | View on Amazon |
| MOTORAD Fits: 3.8L V6 | MG366 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| MOTORAD Fits: 3.8L V6 | MG183 | 🇺🇸 US 🇨🇦 CA | Thermostat Seal | View on Amazon |
| VICTOR REINZ Fits: 3.8L V6 | 711355600 | 🇺🇸 US 🇨🇦 CA | Fiber | View on Amazon |
| VICTOR REINZ Fits: 3.8L V6 | 711354900 | 🇺🇸 US 🇨🇦 CA | Improved Design | View on Amazon |
| VICTOR REINZ Fits: 3.8L V6 | 711424100 | 🇺🇸 US 🇨🇦 CA | Water Bypass | View on Amazon |
This table covers the seals at the thermostat housing and water outlet. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.
13 Thermostat / Thermostat Housing / Water Outlet Seal parts are listed for the 1996 Buick Riviera, from VICTOR REINZ, FEL-PRO, MAHLE / CLEVITE and 4 other brands. FEL-PRO 35666 carries the "Popular" badge.
Thermostat Housing / Water Outlet
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 3.8L V6 | 9022001 | 🇺🇸 US 🇨🇦 CA | Thermostat Housing | View on Amazon |
| GPD Fits: 3.8L V6 | 8241409 | 🇺🇸 US 🇨🇦 CA | Water Outlet | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FOUR SEASONS Fits: 3.8L V6 | 85167 | 🇺🇸 US 🇨🇦 CA | Water Outlet | View on Amazon |
| MOTORAD Fits: 3.8L V6 | CH5167 | 🇺🇸 US 🇨🇦 CA | Includes Gasket | View on Amazon |
This table covers the housings and outlets the thermostat sits in.
4 Thermostat Housing / Water Outlet parts for the 1996 Buick Riviera come from 4 brands — DORMAN, GPD, FOUR SEASONS and 1 other brand.
The Economy section: 2 options from DORMAN and GPD. DORMAN 9022001 is listed in this group.
Standard Replacement: 2 parts, from FOUR SEASONS and MOTORAD. A representative part number is FOUR SEASONS 85167.
This group includes DORMAN 9022001, GPD 8241409 and FOUR SEASONS 85167 and the remaining parts above.
Water Pump
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| US MOTOR WORKS Popular Fits: 3.8L V6 | US5075 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| FVP Fits: 3.8L V6 | US5075 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| SKP Fits: 3.8L V6 | SK1301780 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WJB / INMOTION PARTS Fits: 3.8L V6 | WU5075 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular Fits: 3.8L V6 | 252693 | 🇺🇸 US 🇨🇦 CA | GoldDoes Not Include Mount Bolts | View on Amazon |
| GMB Popular Fits: 3.8L V6 | 1301780 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| AISIN Fits: 3.8L V6 | WPGM607V | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| DAYCO Fits: 3.8L V6 | DP1927 | 🇺🇸 US 🇨🇦 CA | Standard Gasket | View on Amazon |
| DAYCO Fits: 3.8L V6 | DP961 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| GATES Fits: 3.8L V6 | 42097 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| GM GENUINE Fits: 3.8L V6 | 251718 | 🇺🇸 US 🇨🇦 CA | with Gasket | View on Amazon |
This table covers the pumps that circulate coolant through the block and radiator. Typical signs include coolant at the weep hole, pulley play, or a growl from the front of the engine. Replace the thermostat and refill with the specified coolant whenever the pump comes off.
11 Water Pump parts for the 1996 Buick Riviera come from 10 brands — DAYCO, US MOTOR WORKS, FVP and 7 other brands. The "Popular" part is US MOTOR WORKS US5075.
The Economy section: 4 options from US MOTOR WORKS, FVP, SKP and 1 other brand. US MOTOR WORKS US5075 is listed in this group.
Standard Replacement: 7 parts, from DAYCO, ACDELCO, GMB and 3 other brands. A representative part number is ACDELCO 252693.
Water Pump Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO Popular Fits: 3.8L V6 | 35351 | 🇺🇸 US 🇨🇦 CA | To BlockExcept Pump Stamped Metal Gasket Only | View on Amazon |
| FEL-PRO Popular Fits: 3.8L V6 | 35804 | 🇺🇸 US 🇨🇦 CA | To BlockPump stamped "Metal gasket only" | View on Amazon |
| APEX Fits: 3.8L V6 | AWP3003 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| APEX Fits: 3.8L V6 | AWP3146 | 🇺🇸 US 🇨🇦 CA | Pump Stamped "Metal Gasket. Only" | View on Amazon |
| GM GENUINE Fits: 3.8L V6 | 2512047 | 🇺🇸 US 🇨🇦 CA | with Pump Casting 125869482nd Design | View on Amazon |
| MAHLE / CLEVITE Fits: 3.8L V6 | K30793 | 🇺🇸 US 🇨🇦 CA | Paper | View on Amazon |
| MAHLE / CLEVITE Fits: 3.8L V6 | K32493 | 🇺🇸 US 🇨🇦 CA | Molded Rubber | View on Amazon |
| VICTOR REINZ Fits: 3.8L V6 | 711467500 | 🇺🇸 US 🇨🇦 CA | Paper | View on Amazon |
| VICTOR REINZ Fits: 3.8L V6 | 711470000 | 🇺🇸 US 🇨🇦 CA | Pump Stamped "Metal Gasket Only"Metal | View on Amazon |
This table covers the gaskets between the water pump and the block or housing. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for.
9 Water Pump Gasket parts are listed for the 1996 Buick Riviera, from FEL-PRO, APEX, MAHLE / CLEVITE and 2 other brands. FEL-PRO 35351 carries the "Popular" badge.
Part numbers include FEL-PRO 35351, FEL-PRO 35804 and APEX AWP3003, among others listed above.
Buying Cooling System Parts for a 1996 Buick Riviera
On this vehicle, the cooling system system keeps operating temperature in the narrow band the engine was designed for, from radiator and water pump to thermostat and hoses.
- Match the engine first. Some cooling system parts fit every engine; others are engine-specific. Each row shows which engine(s) it fits.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, replace the thermostat and refill with fresh coolant whenever you change a water pump or radiator; original hoses on an older vehicle are on borrowed time.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Coolant / Antifreeze and Temperature Sender / Sensor .
Frequently Asked Questions
How many cooling system parts fit the 1996 Buick Riviera?
Our catalog currently lists 133 cooling system parts for the 1996 Buick Riviera across 20 subcategories and 39 brands, covering both the 3.8L V6 and the 3.8L V6 Supercharged. Each part is matched to the engine(s) it fits.
Do cooling system parts differ between 1996 Buick Riviera engines?
Some do. 89 parts fit every engine; the other 44 are engine-specific. Each row (and the filter at the top) shows which. If you're unsure which engine you have, check the emissions label under the hood or the 8th character of your VIN.
What are the signs of cooling system problems on a 1996 Buick Riviera?
Common symptoms include a rising temperature gauge in traffic, sweet-smelling steam, crusty deposits around hose clamps, or a heater that blows cold. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.
What should I replace at the same time?
Where labor overlaps, replace the thermostat and refill with fresh coolant whenever you change a water pump or radiator; original hoses on an older vehicle are on borrowed time.
What do the market flags (US, CA, MX) on each part mean?
They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 1996 Buick Riviera was originally sold in the US, the safest choice is a part marked for the US market.
How do I make sure a part fits my 1996 Buick Riviera?
First match the engine — each row shows which engine(s) the part fits. Then replace coolant with the exact specification the manufacturer calls for — mixing chemistries can gel and block small passages. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 1996 Buick Riviera
Cooling System Parts for Other Buick Riviera Years
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