The 1990 Morgan 4/4 has 25 cooling system parts with verified fitment on this page — 3 part types and 7 brands, covering both the 1.6L L4 DOHC and the 1.6L L4 SOHC. Each part includes a manufacturer part number and application notes.
On the 1990 Morgan 4/4, 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. All 25 listed parts are Coolant / Antifreeze (17 parts), Thermostat / Thermostat Housing / Water Outlet Seal (5 parts) and Water Pump Gasket (3 parts).
The 1990 Morgan 4/4 was sold with both the 1.6L L4 DOHC and the 1.6L L4 SOHC. 20 parts fit every engine; the other 5 are engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 1990 Morgan 4/4 cooling system parts are PEAK (8 parts), PRESTONE (5 parts) and FEL-PRO (4 parts), plus 4 more brands. Quality grades include Standard Replacement, Economy and Premium.
4 parts on this 1990 Morgan 4/4 page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including FVP MV5050GAL (Coolant / Antifreeze) and PRESTONE AF3100 (Coolant / Antifreeze). 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 1990 4/4 engines | AF3055 | 🇺🇸 US | Prime YellowAll Vehicles | View on Amazon |
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FVP Popular Fits: all 1990 4/4 engines | MV5050GAL | 🇺🇸 US | Extended LifeAll Makes / All Models | View on Amazon |
| PRESTONE Popular Fits: all 1990 4/4 engines | AF3100 | 🇺🇸 US | Prime Yellow - All VehiclesExtended Life | View on Amazon |
| PEAK Fits: all 1990 4/4 engines | BQA1GAL | 🇺🇸 US | Blue Mountain Long LifeAll Vehicle | View on Amazon |
| VALVOLINE Fits: all 1990 4/4 engines | 719009 | 🇺🇸 US | Multi-Vehicle Yellow1 Gallon | View on Amazon |
Heavy Duty
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE Popular Fits: all 1990 4/4 engines | ZXG051 | 🇺🇸 US | G05 Yellow1 Gallon | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Popular Fits: all 1990 4/4 engines | AF2100 | 🇺🇸 US | All Vehicles10yr/300k mi | View on Amazon |
| PEAK Fits: all 1990 4/4 engines | PKP1GAL | 🇺🇸 US | All Vehicles Antifreeze1 Gallon | View on Amazon |
| PEAK Fits: all 1990 4/4 engines | PXA1GAL | 🇺🇸 US | 1 GallonGlobal Lifetime | View on Amazon |
| PRESTONE Fits: all 1990 4/4 engines | AFMAX | 🇺🇸 US | Max Universal1 Gallon | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FVP Fits: all 1990 4/4 engines | GREEN5050GAL | 🇺🇸 US | Low Silicate Blend1 Gallon | View on Amazon |
| PEAK Fits: all 1990 4/4 engines | BMA1GAL | 🇺🇸 US | Blue Mountain Conventional Green1 Gallon | View on Amazon |
| PEAK Fits: all 1990 4/4 engines | RUA1GAL | 🇺🇸 US | Conventional Green1 Gallon | View on Amazon |
| PEAK Fits: all 1990 4/4 engines | FFA1GAL | 🇺🇸 US | Full Force Conventional Green1 Gallon | View on Amazon |
| PEAK Fits: all 1990 4/4 engines | PEB1GAL | 🇺🇸 US | OET European Extended Life Blue1 Gallon | View on Amazon |
| PEAK Fits: all 1990 4/4 engines | SEP1GAL | 🇺🇸 US | Sierra Conventional Green Concentrate Low Toxic Option1 Gallon | View on Amazon |
| PRESTONE Fits: all 1990 4/4 engines | AF3300 | 🇺🇸 US | 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.
17 Coolant / Antifreeze parts for the 1990 Morgan 4/4 come from 4 brands — PEAK, PRESTONE, FVP and 1 other brand. The "Popular" part is FVP MV5050GAL. Every part fits both the 1.6L L4 DOHC and the 1.6L L4 SOHC.
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 4 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.
Thermostat / Thermostat Housing / Water Outlet Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO Fits: 1.6L L4 SOHC | 35361 | 🇺🇸 US | Thermostat Housing Seal | View on Amazon |
| FEL-PRO Fits: 1.6L L4 SOHC | 35266 | 🇺🇸 US | View on Amazon | |
| MAHLE / CLEVITE Fits: 1.6L L4 DOHC | C26302 | 🇺🇸 US | Paper | View on Amazon |
| VICTOR REINZ Fits: all 1990 4/4 engines | 711416000 | 🇺🇸 US | Thermostat Housing | View on Amazon |
| VICTOR REINZ Fits: all 1990 4/4 engines | 711457800 | 🇺🇸 US | 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.
5 Thermostat / Thermostat Housing / Water Outlet Seal parts for the 1990 Morgan 4/4 come from 3 brands — FEL-PRO, VICTOR REINZ and MAHLE / CLEVITE. 2 parts fit every engine; the other 3 are engine-specific.
Part numbers include FEL-PRO 35361, FEL-PRO 35266 and MAHLE / CLEVITE C26302, among others listed above.
Water Pump Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO Fits: 1.6L L4 SOHC | 35359 | 🇺🇸 US | To BlockInlet | View on Amazon |
| FEL-PRO Fits: 1.6L L4 SOHC | 35360 | 🇺🇸 US | To BlockHousing To Block | View on Amazon |
| VICTOR REINZ Fits: all 1990 4/4 engines | 712531810 | 🇺🇸 US | At Cover | 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.
3 Water Pump Gasket parts for the 1990 Morgan 4/4 come from 2 brands — FEL-PRO and VICTOR REINZ. 1 part fits every engine; the other 2 are engine-specific.
Part numbers include FEL-PRO 35359, FEL-PRO 35360 and VICTOR REINZ 712531810.
Buying Cooling System Parts for a 1990 Morgan 4/4
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 / Thermostat Housing / Water Outlet Seal .
Frequently Asked Questions
How many cooling system parts fit the 1990 Morgan 4/4?
Our catalog currently lists 25 cooling system parts for the 1990 Morgan 4/4 across 3 subcategories and 7 brands, covering both the 1.6L L4 DOHC and the 1.6L L4 SOHC. Each part is matched to the engine(s) it fits.
Do cooling system parts differ between 1990 Morgan 4/4 engines?
Some do. 20 parts fit every engine; the other 5 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 1990 Morgan 4/4?
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 1990 Morgan 4/4 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 1990 Morgan 4/4?
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 1990 Morgan 4/4
Cooling System Parts for Other Morgan 4/4 Years
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