68 Cooling system parts are listed for the 1977 Saab 99, in 9 part types, covering the 2.0L L4 engine. Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 1977 Saab 99, 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. 44 parts of the 68 listed are Coolant / Antifreeze (18 parts), Thermostat (17 parts) and Thermostat / Thermostat Housing / Water Outlet Seal (9 parts). The other 6 part types cover the remaining 24 parts.
The 1977 Saab 99 came with a single engine, the 2.0L L4, and every part is verified against it.
24 brands supply cooling system parts for the 1977 Saab 99, led by MOTORAD (16 parts), GATES (9 parts) and PEAK (8 parts), plus 21 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 1977 Saab 99. 14 parts have it, including FVP MV5050GAL (Coolant / Antifreeze) and MOTORAD T16 (Radiator Cap). 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 | AF3055 | 🇺🇸 US 🇨🇦 CA | Prime YellowAll Vehicles | View on Amazon |
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FVP Popular | MV5050GAL | 🇺🇸 US 🇨🇦 CA | Extended LifeAll Makes / All Models | View on Amazon |
| PRESTONE Popular | AF3100 | 🇺🇸 US 🇨🇦 CA | Prime Yellow - All VehiclesExtended Life | View on Amazon |
| PEAK | BQA1GAL | 🇺🇸 US 🇨🇦 CA | Blue Mountain Long LifeAll Vehicle | View on Amazon |
| VALVOLINE | 719009 | 🇺🇸 US 🇨🇦 CA | Multi-Vehicle Yellow1 Gallon | View on Amazon |
Heavy Duty
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE Popular | ZXG051 | 🇺🇸 US 🇨🇦 CA | G05 Yellow1 Gallon | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Popular | AF2100 | 🇺🇸 US 🇨🇦 CA | All Vehicles10yr/300k mi | View on Amazon |
| PEAK | PKP1GAL | 🇺🇸 US 🇨🇦 CA | All Vehicles Antifreeze1 Gallon | View on Amazon |
| PEAK | PXA1GAL | 🇺🇸 US 🇨🇦 CA | 1 GallonGlobal Lifetime | View on Amazon |
| PRESTONE | AF6110 | 🇺🇸 US 🇨🇦 CA | MAX Original EquipmentEuropean Blue | View on Amazon |
| PRESTONE | AFMAX | 🇺🇸 US 🇨🇦 CA | Max Universal1 Gallon | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FVP | GREEN5050GAL | 🇺🇸 US 🇨🇦 CA | Low Silicate Blend1 Gallon | View on Amazon |
| PEAK | PEB1GAL | 🇺🇸 US 🇨🇦 CA | OET European Extended Life Blue1 Gallon | View on Amazon |
| PEAK | BMA1GAL | 🇺🇸 US 🇨🇦 CA | Blue Mountain Conventional Green1 Gallon | View on Amazon |
| PEAK | RUA1GAL | 🇺🇸 US 🇨🇦 CA | Conventional Green1 Gallon | View on Amazon |
| PEAK | FFA1GAL | 🇺🇸 US 🇨🇦 CA | Full Force Conventional Green1 Gallon | View on Amazon |
| PEAK | SEP1GAL | 🇺🇸 US 🇨🇦 CA | Sierra Conventional Green Concentrate Low Toxic Option1 Gallon | View on Amazon |
| PRESTONE | AF3300 | 🇺🇸 US 🇨🇦 CA | Prime Conventional Green 1 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.
18 Coolant / Antifreeze parts are listed for the 1977 Saab 99, from PEAK, PRESTONE, FVP and 1 other brand. FVP MV5050GAL carries the "Popular" badge.
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, PRESTONE, PEAK and 1 other brand supply 4 parts: the catalog's value-priced group. A representative part number is FVP MV5050GAL.
The Heavy Duty section lists 1 option from VALVOLINE — rated for severe service. VALVOLINE ZXG051 is listed in this group.
The Premium section lists 5 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 7 options from PEAK, FVP and PRESTONE — built to original-equipment specification. FVP GREEN5050GAL is listed in this group.
Coolant Hose / Pipe
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO | 31615 | 🇺🇸 US 🇨🇦 CA | Gold / ProfessionalFlexible | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO | 26030X | 🇺🇸 US 🇨🇦 CA | Professional / GoldMolded | View on Amazon |
| GATES | 20893 | 🇺🇸 US 🇨🇦 CA | Molded | View on Amazon |
| ÜRO PARTS | 9349382 | 🇺🇸 US 🇨🇦 CA | Water Pump To Expansion TankOn Reservoir | View on Amazon |
This table covers the hard pipes and extra hoses in the coolant circuit.
4 Coolant Hose / Pipe parts are listed for the 1977 Saab 99, from ACDELCO, GATES and ÜRO PARTS.
Economy: 1 part, from ACDELCO. A representative part number is ACDELCO 31615.
The Standard Replacement section: 3 options from ACDELCO, GATES and ÜRO PARTS. ACDELCO 26030X is listed in this group.
Listed part numbers: ACDELCO 31615, ACDELCO 26030X and GATES 20893, plus the other parts above.
Cooling System Tester Adapter
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO | 12A01 | 🇺🇸 US 🇨🇦 CA | ProfessionalIncluded In Tester | View on Amazon |
| GATES | 31413 | 🇺🇸 US 🇨🇦 CA | Cooling System PressureRadiator Cap | View on Amazon |
| MOTORAD | 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 1977 Saab 99, from ACDELCO, GATES and MOTORAD.
Listed part numbers: ACDELCO 12A01, GATES 31413 and MOTORAD 3003.
Radiator Cap
Locking Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES | 31518 | 🇺🇸 US 🇨🇦 CA | Safety Release Radiator Cap | View on Amazon |
| MOTORAD | ST16 | 🇺🇸 US 🇨🇦 CA | Safety Lever | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORAD Popular | T16 | 🇺🇸 US 🇨🇦 CA | Standard | View on Amazon |
| GATES | 31528 | 🇺🇸 US 🇨🇦 CA | OE Type | View on Amazon |
| SKP | SK10230 | 🇺🇸 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.
5 Radiator Cap parts are listed for the 1977 Saab 99, from GATES, MOTORAD and SKP. MOTORAD T16 carries the "Popular" badge.
The Locking Replacement section lists 2 options from GATES and MOTORAD — grouped under the catalog's "Locking Replacement" designation — the notes column spells out what sets them apart. GATES 31518 is listed in this group.
The Standard Replacement section: 3 options from MOTORAD, GATES and SKP. MOTORAD T16 is listed in this group.
This group includes MOTORAD T16, GATES 31518 and MOTORAD ST16 and the remaining parts above.
Radiator Hose
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES Popular | 25252 | 🇺🇸 US 🇨🇦 CA | Flexible | View on Amazon |
| CONTINENTAL | 52015 | 🇺🇸 US 🇨🇦 CA | FlexibleDoes Not include seals | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES Popular | 20137 | 🇺🇸 US 🇨🇦 CA | Molded | View on Amazon |
| ACDELCO | 20002S | 🇺🇸 US 🇨🇦 CA | Professional / GoldMolded | View on Amazon |
| CONTINENTAL | 60138 | 🇺🇸 US 🇨🇦 CA | MoldedCut to Fit | View on Amazon |
| DAYCO | 71178 | 🇺🇸 US 🇨🇦 CA | Curved | 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.
6 Radiator Hose parts for the 1977 Saab 99 come from 4 brands — GATES, CONTINENTAL, ACDELCO and 1 other brand. The "Popular" part is GATES 25252.
The Economy section: 2 options from GATES and CONTINENTAL. GATES 25252 is listed in this group.
Standard Replacement: 4 parts, from GATES, ACDELCO, CONTINENTAL and 1 other brand. A representative part number is GATES 20137.
This group includes GATES 25252, CONTINENTAL 52015 and GATES 20137 and the remaining parts above.
Temperature Sender / Sensor
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ULTRA-POWER Popular | 1T1204 | 🇺🇸 US 🇨🇦 CA | with Gauge | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BECK/ARNLEY | 2011358 | 🇺🇸 US 🇨🇦 CA | Switch | View on Amazon |
| ROSTRA | 680144 | 🇺🇸 US 🇨🇦 CA | Sender | View on Amazon |
| STANDARD MOTOR PRODUCTS | TS228 | 🇺🇸 US 🇨🇦 CA | with Gauge | View on Amazon |
| WELLS | 1T1204 | 🇺🇸 US 🇨🇦 CA | with 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.
5 Temperature Sender / Sensor parts are listed for the 1977 Saab 99, from ULTRA-POWER, BECK/ARNLEY, ROSTRA and 2 other brands. ULTRA-POWER 1T1204 carries the "Popular" badge.
Economy: 1 part, from ULTRA-POWER. A representative part number is ULTRA-POWER 1T1204.
The Standard Replacement section: 4 options from BECK/ARNLEY, ROSTRA, STANDARD MOTOR PRODUCTS and 1 other brand. BECK/ARNLEY 2011358 is listed in this group.
This group includes ULTRA-POWER 1T1204, BECK/ARNLEY 2011358 and ROSTRA 680144 and the remaining parts above.
Thermostat
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PROFESSIONAL PARTS SWEDEN | 26349512 | 🇺🇸 US 🇨🇦 CA | Includes Gasket | View on Amazon |
Performance
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORAD Popular | 2028160 | 🇺🇸 US 🇨🇦 CA | High Flow | View on Amazon |
| MOTORAD Popular | 2028180 | 🇺🇸 US 🇨🇦 CA | High Flow | View on Amazon |
| MOTORAD Popular | 2028195 | 🇺🇸 US 🇨🇦 CA | High Flow | View on Amazon |
| MOTORAD | 2028170 | 🇺🇸 US 🇨🇦 CA | High Flow | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORAD | 7228180 | 🇺🇸 US 🇨🇦 CA | Fail-SafeIncludes seal | View on Amazon |
| MOTORAD | 7228195 | 🇺🇸 US 🇨🇦 CA | Fail-SafeIncludes seal | View on Amazon |
| MOTORAD | 7228160 | 🇺🇸 US 🇨🇦 CA | Fail-SafeIncludes seal | View on Amazon |
| MOTORAD | 7228170 | 🇺🇸 US 🇨🇦 CA | Fail-SafeIncludes seal | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORAD Popular | 228195 | 🇺🇸 US 🇨🇦 CA | Standard | View on Amazon |
| BECK/ARNLEY | 1430701 | 🇺🇸 US 🇨🇦 CA | Alternate TemperatureGasket/Seal Not Included | View on Amazon |
| BECK/ARNLEY | 1430702 | 🇺🇸 US 🇨🇦 CA | OE TemperatureGasket/Seal Not Included | View on Amazon |
| GATES | 33188 | 🇺🇸 US 🇨🇦 CA | OE Type | View on Amazon |
| GATES | 33189 | 🇺🇸 US 🇨🇦 CA | OE Type | View on Amazon |
| MOTORAD | 228160 | 🇺🇸 US 🇨🇦 CA | Standard | View on Amazon |
| MOTORAD | 228170 | 🇺🇸 US 🇨🇦 CA | Standard | View on Amazon |
| MOTORAD | 228180 | 🇺🇸 US 🇨🇦 CA | Standard | 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.
17 Thermostat parts for the 1977 Saab 99 come from 4 brands — MOTORAD, BECK/ARNLEY, GATES and 1 other brand. The "Popular" part is MOTORAD 2028160.
The Economy section: 1 option from PROFESSIONAL PARTS SWEDEN. PROFESSIONAL PARTS SWEDEN 26349512 is listed in this group.
The Performance section lists 4 options from MOTORAD — engineered beyond original-equipment specification. MOTORAD 2028160 is listed in this group.
Premium: 4 parts, from MOTORAD. A representative part number is MOTORAD 7228180.
Standard Replacement: 8 parts, from MOTORAD, BECK/ARNLEY and GATES. A representative part number is MOTORAD 228195.
Thermostat / Thermostat Housing / Water Outlet Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO Popular | 25565 | 🇺🇸 US 🇨🇦 CA | Water Outlet Seal | View on Amazon |
| MOTORAD Popular | MG23 | 🇺🇸 US 🇨🇦 CA | Thermostat Seal | View on Amazon |
| ELRING | 394090 | 🇺🇸 US 🇨🇦 CA | material: NBR (nitrile butadiene rubber) | View on Amazon |
| FACET | 79502 | 🇺🇸 US 🇨🇦 CA | O-Ring | View on Amazon |
| GATES | 33612 | 🇺🇸 US 🇨🇦 CA | Thermostat Seal - 1 51/64" x 2 3/16" x 11/64" (Grooved, Square Cut) | View on Amazon |
| MAHLE / CLEVITE | C20283 | 🇺🇸 US 🇨🇦 CA | Paper | View on Amazon |
| STANT | 27270 | 🇺🇸 US 🇨🇦 CA | Replacement Replaces 25270Thermostat Seal | View on Amazon |
| STANT | 25270 | 🇺🇸 US 🇨🇦 CA | Replaced by 27270Thermostat Seal | View on Amazon |
| VICTOR REINZ | 713539800 | 🇺🇸 US 🇨🇦 CA | Water Outlet Seal | 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.
9 Thermostat / Thermostat Housing / Water Outlet Seal parts are listed for the 1977 Saab 99, from STANT, FEL-PRO, MOTORAD and 5 other brands. FEL-PRO 25565 carries the "Popular" badge.
This group includes FEL-PRO 25565, MOTORAD MG23 and ELRING 394090 and the remaining parts above.
Water Pump
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SALERI | PA469 | 🇺🇸 US 🇨🇦 CA | MechanicalNumber of Gaskets/Seals/Seal Rings: 1 | 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.
This group shows a single part: SALERI PA469.
Buying Cooling System Parts for a 1977 Saab 99
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.
- Confirm you have the 2.0L L4 engine — every part on this page is matched to it.
- 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 Thermostat .
Frequently Asked Questions
How many cooling system parts fit the 1977 Saab 99?
Our catalog currently lists 68 cooling system parts for the 1977 Saab 99 across 9 subcategories and 24 brands, covering the 2.0L L4 engine. Each part is matched to the engine(s) it fits.
What are the signs of cooling system problems on a 1977 Saab 99?
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 1977 Saab 99 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 1977 Saab 99?
Every part on this page is matched to the 2.0L L4 engine. 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 1977 Saab 99
Cooling System Parts for Other Saab 99 Years
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