This page lists 31 cooling system parts for the 1988 Excalibur Phaeton, across 4 part types, covering both the 5.0L 305cid V8 and the 5.7L 350cid V8. Every part shows its brand, manufacturer part number and fitment notes.
On the 1988 Excalibur Phaeton, 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. 28 parts of the 31 listed are Coolant / Antifreeze (16 parts), Water Pump Gasket (8 parts) and Thermostat / Thermostat Housing / Water Outlet Seal (4 parts). The other 1 part type covers the remaining 3 parts.
The 1988 Excalibur Phaeton was sold with both the 5.0L 305cid V8 and the 5.7L 350cid V8. 30 parts fit every engine; the other 1 is engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 1988 Excalibur Phaeton cooling system parts are PEAK (7 parts), PRESTONE (5 parts) and FEL-PRO (5 parts), plus 6 more brands. Quality grades include Standard Replacement, Economy and Premium.
6 parts on this 1988 Excalibur Phaeton page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including FVP MV5050GAL (Coolant / Antifreeze) and FEL-PRO 5152 (Water Pump Gasket). 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 1988 Phaeton engines | AF3055 | 🇺🇸 US | Prime YellowAll Vehicles | View on Amazon |
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FVP Popular Fits: all 1988 Phaeton engines | MV5050GAL | 🇺🇸 US | Extended LifeAll Makes / All Models | View on Amazon |
| PRESTONE Popular Fits: all 1988 Phaeton engines | AF3100 | 🇺🇸 US | Prime Yellow - All VehiclesExtended Life | View on Amazon |
| PEAK Fits: all 1988 Phaeton engines | BQA1GAL | 🇺🇸 US | Blue Mountain Long LifeAll Vehicle | View on Amazon |
| VALVOLINE Fits: all 1988 Phaeton engines | 719009 | 🇺🇸 US | Multi-Vehicle Yellow1 Gallon | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Popular Fits: all 1988 Phaeton engines | AF2100 | 🇺🇸 US | All Vehicles10yr/300k mi | View on Amazon |
| PEAK Fits: all 1988 Phaeton engines | PKP1GAL | 🇺🇸 US | All Vehicles Antifreeze1 Gallon | View on Amazon |
| PEAK Fits: all 1988 Phaeton engines | PXA1GAL | 🇺🇸 US | Global Lifetime1 Gallon | View on Amazon |
| PRESTONE Fits: all 1988 Phaeton engines | AFMAX | 🇺🇸 US | Max Universal1 Gallon | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE Popular Fits: all 1988 Phaeton engines | ZX001 | 🇺🇸 US | Original Green1 Gallon | View on Amazon |
| FVP Fits: all 1988 Phaeton engines | GREEN5050GAL | 🇺🇸 US | Low Silicate Blend1 Gallon | View on Amazon |
| PEAK Fits: all 1988 Phaeton engines | BMA1GAL | 🇺🇸 US | Blue Mountain Conventional Green1 Gallon | View on Amazon |
| PEAK Fits: all 1988 Phaeton engines | RUA1GAL | 🇺🇸 US | Conventional Green1 Gallon | View on Amazon |
| PEAK Fits: all 1988 Phaeton engines | FFA1GAL | 🇺🇸 US | Full Force Conventional Green1 Gallon | View on Amazon |
| PEAK Fits: all 1988 Phaeton engines | SEP1GAL | 🇺🇸 US | Sierra Conventional Green Concentrate Low Toxic Option1 Gallon | View on Amazon |
| PRESTONE Fits: all 1988 Phaeton 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.
16 Coolant / Antifreeze parts for the 1988 Excalibur Phaeton come from 4 brands — PEAK, PRESTONE, FVP and 1 other brand. The "Popular" part is FVP MV5050GAL. Every part fits both the 5.0L 305cid V8 and the 5.7L 350cid V8.
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 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, VALVOLINE, FVP and 1 other brand supply 7 parts: built to original-equipment specification. A representative part number is VALVOLINE ZX001.
Thermostat / Thermostat Housing / Water Outlet Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| APEX Fits: all 1988 Phaeton engines | AWO2000 | 🇺🇸 US | Water Outlet Seal | View on Amazon |
| FEL-PRO Fits: all 1988 Phaeton engines | 35062 | 🇺🇸 US | 1-13/16 (In) Inside DiameterComposite Material | View on Amazon |
| FEL-PRO Fits: all 1988 Phaeton engines | 35562T | 🇺🇸 US | Permadryplus | View on Amazon |
| VICTOR REINZ Fits: all 1988 Phaeton engines | 711359200 | 🇺🇸 US | Rigid CarrierWater Outlet | 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.
4 Thermostat / Thermostat Housing / Water Outlet Seal parts for the 1988 Excalibur Phaeton come from 3 brands — FEL-PRO, APEX and VICTOR REINZ. Every part fits both the 5.0L 305cid V8 and the 5.7L 350cid V8.
This group includes APEX AWO2000, FEL-PRO 35062 and FEL-PRO 35562T and the remaining parts above.
Water Pump Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO Popular Fits: all 1988 Phaeton engines | 5152 | 🇺🇸 US | To Block3 Bolt Gasket | View on Amazon |
| FEL-PRO Popular Fits: all 1988 Phaeton engines | ES73030 | 🇺🇸 US | Gasket Kit | View on Amazon |
| APEX Fits: all 1988 Phaeton engines | AWP3018 | 🇺🇸 US | To Block | View on Amazon |
| APEX Fits: all 1988 Phaeton engines | AWP3019 | 🇺🇸 US | To Plate | View on Amazon |
| FEL-PRO Fits: all 1988 Phaeton engines | 13032 | 🇺🇸 US | To BlockBacking Plate | View on Amazon |
| MAHLE / CLEVITE Fits: 5.7L 350cid V8 | K27091 | 🇺🇸 US | Paper | View on Amazon |
| VICTOR REINZ Fits: all 1988 Phaeton engines | 711465400 | 🇺🇸 US | Paper | View on Amazon |
| VICTOR REINZ Fits: all 1988 Phaeton engines | 711465700 | 🇺🇸 US | Paper | 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.
8 Water Pump Gasket parts for the 1988 Excalibur Phaeton come from 4 brands — FEL-PRO, APEX, VICTOR REINZ and 1 other brand. The "Popular" part is FEL-PRO 5152. 7 parts fit every engine; the other 1 is engine-specific.
This group includes FEL-PRO 5152, FEL-PRO ES73030 and APEX AWP3018 and the remaining parts above.
Water Pump Stud Kit
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ARP Fits: all 1988 Phaeton engines | 1343204 | 🇺🇸 US 🇨🇦 CA | Hex Bolt Head | View on Amazon |
| ARP Fits: all 1988 Phaeton engines | 1343203 | 🇺🇸 US 🇨🇦 CA | Black Oxide12 Point Bolt Head | View on Amazon |
| ARP Fits: all 1988 Phaeton engines | 4343203 | 🇺🇸 US 🇨🇦 CA | Stainless Steel12 Point Bolt Head | View on Amazon |
This table covers the Water Pump Stud kits.
ARP supplies the 3 Water Pump Stud Kit parts for the 1988 Excalibur Phaeton. All of them fit every engine offered in the 1988 Phaeton.
Listed part numbers: ARP 1343204, ARP 1343203 and ARP 4343203.
Buying Cooling System Parts for a 1988 Excalibur Phaeton
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 Water Pump Gasket .
Frequently Asked Questions
How many cooling system parts fit the 1988 Excalibur Phaeton?
Our catalog currently lists 31 cooling system parts for the 1988 Excalibur Phaeton across 4 subcategories and 9 brands, covering both the 5.0L 305cid V8 and the 5.7L 350cid V8. Each part is matched to the engine(s) it fits.
Do cooling system parts differ between 1988 Excalibur Phaeton engines?
Some do. 30 parts fit every engine; the other 1 is 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 1988 Excalibur Phaeton?
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 1988 Excalibur Phaeton 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 1988 Excalibur Phaeton?
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 1988 Excalibur Phaeton
Cooling System Parts for Other Excalibur Phaeton Years
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