70 Cooling system parts are listed for the 1978 Saab 99, in 9 part types, covering both the 2.0L L4 and the 2.0L L4 Turbocharged. Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 1978 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. Most of the listed parts 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 26 parts.
The 1978 Saab 99 was sold with both the 2.0L L4 and the 2.0L L4 Turbocharged. 63 parts fit every engine; the other 7 are engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 1978 Saab 99 cooling system parts are MOTORAD (16 parts), GATES (9 parts) and PEAK (8 parts), plus 21 more brands. Quality grades include Standard Replacement, Economy and Premium.
14 parts on this 1978 Saab 99 page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including FVP MV5050GAL (Coolant / Antifreeze) and MOTORAD T16 (Radiator Cap). Click any part number to see every vehicle that part fits.
Coolant / Antifreeze
Compatible With All Colors
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Fits: all 1978 99 engines | AF3055 | 🇺🇸 US 🇨🇦 CA | Prime YellowAll Vehicles | View on Amazon |
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FVP Popular Fits: all 1978 99 engines | MV5050GAL | 🇺🇸 US 🇨🇦 CA | Extended LifeAll Makes / All Models | View on Amazon |
| PRESTONE Popular Fits: all 1978 99 engines | AF3100 | 🇺🇸 US 🇨🇦 CA | Prime Yellow - All VehiclesExtended Life | View on Amazon |
| PEAK Fits: all 1978 99 engines | BQA1GAL | 🇺🇸 US 🇨🇦 CA | Blue Mountain Long LifeAll Vehicle | View on Amazon |
| VALVOLINE Fits: all 1978 99 engines | 719009 | 🇺🇸 US 🇨🇦 CA | Multi-Vehicle Yellow1 Gallon | View on Amazon |
Heavy Duty
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE Popular Fits: all 1978 99 engines | ZXG051 | 🇺🇸 US 🇨🇦 CA | G05 Yellow1 Gallon | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Popular Fits: all 1978 99 engines | AF2100 | 🇺🇸 US 🇨🇦 CA | All Vehicles10yr/300k mi | View on Amazon |
| PEAK Fits: all 1978 99 engines | PKP1GAL | 🇺🇸 US 🇨🇦 CA | All Vehicles Antifreeze1 Gallon | View on Amazon |
| PEAK Fits: all 1978 99 engines | PXA1GAL | 🇺🇸 US 🇨🇦 CA | 1 GallonGlobal Lifetime | View on Amazon |
| PRESTONE Fits: all 1978 99 engines | AF6110 | 🇺🇸 US 🇨🇦 CA | MAX Original EquipmentEuropean Blue | View on Amazon |
| PRESTONE Fits: all 1978 99 engines | AFMAX | 🇺🇸 US 🇨🇦 CA | Max Universal1 Gallon | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FVP Fits: all 1978 99 engines | GREEN5050GAL | 🇺🇸 US 🇨🇦 CA | Low Silicate Blend1 Gallon | View on Amazon |
| PEAK Fits: all 1978 99 engines | PEB1GAL | 🇺🇸 US 🇨🇦 CA | OET European Extended Life Blue1 Gallon | View on Amazon |
| PEAK Fits: all 1978 99 engines | BMA1GAL | 🇺🇸 US 🇨🇦 CA | Blue Mountain Conventional Green1 Gallon | View on Amazon |
| PEAK Fits: all 1978 99 engines | RUA1GAL | 🇺🇸 US 🇨🇦 CA | Conventional Green1 Gallon | View on Amazon |
| PEAK Fits: all 1978 99 engines | FFA1GAL | 🇺🇸 US 🇨🇦 CA | Full Force Conventional Green1 Gallon | View on Amazon |
| PEAK Fits: all 1978 99 engines | SEP1GAL | 🇺🇸 US 🇨🇦 CA | Sierra Conventional Green Concentrate Low Toxic Option1 Gallon | View on Amazon |
| PRESTONE Fits: all 1978 99 engines | 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 for the 1978 Saab 99 come from 4 brands — PEAK, PRESTONE, FVP and 1 other brand. The "Popular" part is FVP MV5050GAL. Every part fits both the 2.0L L4 and the 2.0L L4 Turbocharged.
In the Compatible With All Colors grade, PRESTONE supplies 1 part: grouped under the catalog's "Compatible With All Colors" designation — the notes column spells out what sets them apart. A representative part number is PRESTONE AF3055.
The Economy section lists 4 options from FVP, PRESTONE, PEAK and 1 other brand — the catalog's value-priced group. FVP MV5050GAL is listed in this group.
In the Heavy Duty grade, VALVOLINE supplies 1 part: rated for severe service. A representative part number is VALVOLINE ZXG051.
In the Premium grade, PRESTONE and PEAK supply 5 parts: a step above OE specification in materials, tolerances or warranty terms. A representative part number is PRESTONE AF2100.
In the Standard Replacement grade, PEAK, FVP and PRESTONE supply 7 parts: built to original-equipment specification. A representative part number is FVP GREEN5050GAL.
Coolant Hose / Pipe
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Fits: all 1978 99 engines | 31615 | 🇺🇸 US 🇨🇦 CA | Gold / ProfessionalFlexible | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Fits: all 1978 99 engines | 26030X | 🇺🇸 US 🇨🇦 CA | Professional / GoldMolded | View on Amazon |
| GATES Fits: all 1978 99 engines | 20893 | 🇺🇸 US 🇨🇦 CA | Molded | View on Amazon |
| ÜRO PARTS Fits: all 1978 99 engines | 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 for the 1978 Saab 99 come from 3 brands — ACDELCO, GATES and ÜRO PARTS. Every part fits both the 2.0L L4 and the 2.0L L4 Turbocharged.
The Economy section: 1 option from ACDELCO. ACDELCO 31615 is listed in this group.
Standard Replacement: 3 parts, from ACDELCO, GATES and ÜRO PARTS. A representative part number is ACDELCO 26030X.
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 Fits: all 1978 99 engines | 12A01 | 🇺🇸 US 🇨🇦 CA | ProfessionalIncluded In Tester | View on Amazon |
| GATES Fits: all 1978 99 engines | 31413 | 🇺🇸 US 🇨🇦 CA | Cooling System PressureRadiator Cap | View on Amazon |
| MOTORAD Fits: all 1978 99 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 for the 1978 Saab 99 come from 3 brands — ACDELCO, GATES and MOTORAD. Every part fits both the 2.0L L4 and the 2.0L L4 Turbocharged.
Listed part numbers: ACDELCO 12A01, GATES 31413 and MOTORAD 3003.
Radiator Cap
Locking Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES Fits: all 1978 99 engines | 31518 | 🇺🇸 US 🇨🇦 CA | Safety Release Radiator Cap | View on Amazon |
| MOTORAD Fits: all 1978 99 engines | ST16 | 🇺🇸 US 🇨🇦 CA | Safety Lever | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORAD Popular Fits: all 1978 99 engines | T16 | 🇺🇸 US 🇨🇦 CA | Standard | View on Amazon |
| GATES Fits: all 1978 99 engines | 31528 | 🇺🇸 US 🇨🇦 CA | OE Type | View on Amazon |
| SKP Fits: all 1978 99 engines | 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 for the 1978 Saab 99 come from 3 brands — GATES, MOTORAD and SKP. The "Popular" part is MOTORAD T16. Every part fits both the 2.0L L4 and the 2.0L L4 Turbocharged.
In the Locking Replacement grade, GATES and MOTORAD supply 2 parts: grouped under the catalog's "Locking Replacement" designation — the notes column spells out what sets them apart. A representative part number is GATES 31518.
Standard Replacement: 3 parts, from MOTORAD, GATES and SKP. A representative part number is MOTORAD T16.
Part numbers include MOTORAD T16, GATES 31518 and MOTORAD ST16, among others listed above.
Radiator Hose
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DAYCO Popular Fits: all 1978 99 engines | 81041 | 🇺🇸 US 🇨🇦 CA | Flex Radiator Hose | View on Amazon |
| CONTINENTAL Fits: all 1978 99 engines | 52015 | 🇺🇸 US 🇨🇦 CA | FlexibleDoes Not include seals | View on Amazon |
| DAYCO Fits: all 1978 99 engines | 81071 | 🇺🇸 US 🇨🇦 CA | Flex Radiator Hose | View on Amazon |
| GATES Fits: 2.0L L4 | 25252 | 🇺🇸 US 🇨🇦 CA | Flexible | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES Popular Fits: 2.0L L4 | 20137 | 🇺🇸 US 🇨🇦 CA | Molded | View on Amazon |
| ACDELCO Fits: 2.0L L4 | 20002S | 🇺🇸 US 🇨🇦 CA | Professional / GoldMolded | View on Amazon |
| CONTINENTAL Fits: all 1978 99 engines | 60138 | 🇺🇸 US 🇨🇦 CA | MoldedCut to Fit | View on Amazon |
| DAYCO Fits: all 1978 99 engines | 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.
8 Radiator Hose parts are listed for the 1978 Saab 99, from DAYCO, CONTINENTAL, GATES and 1 other brand. DAYCO 81041 carries the "Popular" badge. 5 parts fit every engine; the other 3 are engine-specific.
Economy: 4 parts, from DAYCO, CONTINENTAL and GATES. A representative part number is DAYCO 81041.
The Standard Replacement section: 4 options from GATES, ACDELCO, CONTINENTAL and 1 other brand. GATES 20137 is listed in this group.
This group includes DAYCO 81041, CONTINENTAL 52015 and DAYCO 81071 and the remaining parts above.
Temperature Sender / Sensor
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ULTRA-POWER Popular Fits: all 1978 99 engines | 1T1204 | 🇺🇸 US 🇨🇦 CA | with Gauge | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BECK/ARNLEY Fits: all 1978 99 engines | 2011358 | 🇺🇸 US 🇨🇦 CA | Switch | View on Amazon |
| ROSTRA Fits: all 1978 99 engines | 680144 | 🇺🇸 US 🇨🇦 CA | Sender | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 1978 99 engines | TS228 | 🇺🇸 US 🇨🇦 CA | with Gauge | View on Amazon |
| WELLS Fits: all 1978 99 engines | 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 for the 1978 Saab 99 come from 5 brands — ULTRA-POWER, BECK/ARNLEY, ROSTRA and 2 other brands. The "Popular" part is ULTRA-POWER 1T1204. Every part fits both the 2.0L L4 and the 2.0L L4 Turbocharged.
The Economy section: 1 option from ULTRA-POWER. ULTRA-POWER 1T1204 is listed in this group.
Standard Replacement: 4 parts, from BECK/ARNLEY, ROSTRA, STANDARD MOTOR PRODUCTS and 1 other brand. A representative part number is BECK/ARNLEY 2011358.
Part numbers include ULTRA-POWER 1T1204, BECK/ARNLEY 2011358 and ROSTRA 680144, among others listed above.
Thermostat
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PROFESSIONAL PARTS SWEDEN Fits: 2.0L L4 | 26349512 | 🇺🇸 US 🇨🇦 CA | Includes Gasket | View on Amazon |
Performance
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORAD Popular Fits: all 1978 99 engines | 2028160 | 🇺🇸 US 🇨🇦 CA | High Flow | View on Amazon |
| MOTORAD Popular Fits: all 1978 99 engines | 2028180 | 🇺🇸 US 🇨🇦 CA | High Flow | View on Amazon |
| MOTORAD Popular Fits: all 1978 99 engines | 2028195 | 🇺🇸 US 🇨🇦 CA | High Flow | View on Amazon |
| MOTORAD Fits: all 1978 99 engines | 2028170 | 🇺🇸 US 🇨🇦 CA | High Flow | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORAD Fits: all 1978 99 engines | 7228180 | 🇺🇸 US 🇨🇦 CA | Fail-SafeIncludes seal | View on Amazon |
| MOTORAD Fits: all 1978 99 engines | 7228195 | 🇺🇸 US 🇨🇦 CA | Fail-SafeIncludes seal | View on Amazon |
| MOTORAD Fits: all 1978 99 engines | 7228160 | 🇺🇸 US 🇨🇦 CA | Fail-SafeIncludes seal | View on Amazon |
| MOTORAD Fits: all 1978 99 engines | 7228170 | 🇺🇸 US 🇨🇦 CA | Fail-SafeIncludes seal | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORAD Popular Fits: all 1978 99 engines | 228195 | 🇺🇸 US 🇨🇦 CA | Standard | View on Amazon |
| BECK/ARNLEY Fits: all 1978 99 engines | 1430701 | 🇺🇸 US 🇨🇦 CA | Alternate TemperatureGasket/Seal Not Included | View on Amazon |
| BECK/ARNLEY Fits: all 1978 99 engines | 1430702 | 🇺🇸 US 🇨🇦 CA | OE TemperatureGasket/Seal Not Included | View on Amazon |
| GATES Fits: all 1978 99 engines | 33188 | 🇺🇸 US 🇨🇦 CA | OE Type | View on Amazon |
| GATES Fits: all 1978 99 engines | 33189 | 🇺🇸 US 🇨🇦 CA | OE Type | View on Amazon |
| MOTORAD Fits: all 1978 99 engines | 228160 | 🇺🇸 US 🇨🇦 CA | Standard | View on Amazon |
| MOTORAD Fits: all 1978 99 engines | 228170 | 🇺🇸 US 🇨🇦 CA | Standard | View on Amazon |
| MOTORAD Fits: all 1978 99 engines | 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 are listed for the 1978 Saab 99, from MOTORAD, BECK/ARNLEY, GATES and 1 other brand. MOTORAD 2028160 carries the "Popular" badge. 16 parts fit every engine; the other 1 is engine-specific.
Economy: 1 part, from PROFESSIONAL PARTS SWEDEN. A representative part number is PROFESSIONAL PARTS SWEDEN 26349512.
In the Performance grade, MOTORAD supplies 4 parts: engineered beyond original-equipment specification. A representative part number is MOTORAD 2028160.
The Premium section: 4 options from MOTORAD. MOTORAD 7228180 is listed in this group.
The Standard Replacement section: 8 options from MOTORAD, BECK/ARNLEY and GATES. MOTORAD 228195 is listed in this group.
Thermostat / Thermostat Housing / Water Outlet Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO Popular Fits: all 1978 99 engines | 25565 | 🇺🇸 US 🇨🇦 CA | Water Outlet Seal | View on Amazon |
| MOTORAD Popular Fits: all 1978 99 engines | MG23 | 🇺🇸 US 🇨🇦 CA | Thermostat Seal | View on Amazon |
| ELRING Fits: 2.0L L4 | 394090 | 🇺🇸 US 🇨🇦 CA | material: NBR (nitrile butadiene rubber) | View on Amazon |
| FACET Fits: 2.0L L4 | 79502 | 🇺🇸 US 🇨🇦 CA | O-Ring | View on Amazon |
| GATES Fits: all 1978 99 engines | 33612 | 🇺🇸 US 🇨🇦 CA | Thermostat Seal - 1 51/64" x 2 3/16" x 11/64" (Grooved, Square Cut) | View on Amazon |
| MAHLE / CLEVITE Fits: all 1978 99 engines | C20283 | 🇺🇸 US 🇨🇦 CA | Paper | View on Amazon |
| STANT Fits: all 1978 99 engines | 27270 | 🇺🇸 US 🇨🇦 CA | Replacement Replaces 25270Thermostat Seal | View on Amazon |
| STANT Fits: all 1978 99 engines | 25270 | 🇺🇸 US 🇨🇦 CA | Replaced by 27270Thermostat Seal | View on Amazon |
| VICTOR REINZ Fits: 2.0L L4 | 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 for the 1978 Saab 99 come from 8 brands — STANT, FEL-PRO, MOTORAD and 5 other brands. The "Popular" part is FEL-PRO 25565. 6 parts fit every engine; the other 3 are engine-specific.
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 Fits: all 1978 99 engines | 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.
One part is listed for the 1978 Saab 99 — SALERI PA469.
Buying Cooling System Parts for a 1978 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.
- 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 Thermostat .
Frequently Asked Questions
How many cooling system parts fit the 1978 Saab 99?
Our catalog currently lists 70 cooling system parts for the 1978 Saab 99 across 9 subcategories and 24 brands, covering both the 2.0L L4 and the 2.0L L4 Turbocharged. Each part is matched to the engine(s) it fits.
Do cooling system parts differ between 1978 Saab 99 engines?
Some do. 63 parts fit every engine; the other 7 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 1978 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 1978 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 1978 Saab 99?
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 1978 Saab 99
Cooling System Parts for Other Saab 99 Years
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