This page lists 82 cooling system parts for the 1973 Checker Taxicab, across 6 part types, covering both the 4.1L 250cid L6 and the 5.7L 350cid V8. Every part shows its brand, manufacturer part number and fitment notes.
The cooling system system on the 1973 Checker Taxicab keeps operating temperature in the narrow band the engine was designed for, from radiator and water pump to thermostat and hoses. The largest groups are Thermostat (25 parts), Radiator Hose (21 parts) and Coolant / Antifreeze (15 parts). The other 3 part types cover the remaining 21 parts.
The 1973 Checker Taxicab was sold with both the 4.1L 250cid L6 and the 5.7L 350cid V8. 45 parts fit every engine; the other 37 are engine-specific. Each part shows which engine(s) it fits.
13 brands supply cooling system parts for the 1973 Checker Taxicab, led by MOTORAD (17 parts), GATES (13 parts) and PEAK (7 parts), plus 10 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 1973 Checker Taxicab. 16 parts have it, including FVP MV5050GAL (Coolant / Antifreeze) and ACDELCO 22219M (Radiator Hose). 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 1973 Taxicab engines | AF3055 | 🇺🇸 US | Prime YellowAll Vehicles | View on Amazon |
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FVP Popular Fits: all 1973 Taxicab engines | MV5050GAL | 🇺🇸 US | Extended LifeAll Makes / All Models | View on Amazon |
| PRESTONE Popular Fits: all 1973 Taxicab engines | AF3100 | 🇺🇸 US | Prime Yellow - All VehiclesExtended Life | View on Amazon |
| PEAK Fits: all 1973 Taxicab engines | BQA1GAL | 🇺🇸 US | Blue Mountain Long LifeAll Vehicle | View on Amazon |
| VALVOLINE Fits: all 1973 Taxicab engines | 719009 | 🇺🇸 US | Multi-Vehicle Yellow1 Gallon | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Popular Fits: all 1973 Taxicab engines | AF2100 | 🇺🇸 US | All Vehicles10yr/300k mi | View on Amazon |
| PEAK Fits: all 1973 Taxicab engines | PKP1GAL | 🇺🇸 US | All Vehicles Antifreeze1 Gallon | View on Amazon |
| PEAK Fits: all 1973 Taxicab engines | PXA1GAL | 🇺🇸 US | Global Lifetime1 Gallon | View on Amazon |
| PRESTONE Fits: all 1973 Taxicab engines | AFMAX | 🇺🇸 US | Max Universal1 Gallon | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FVP Fits: all 1973 Taxicab engines | GREEN5050GAL | 🇺🇸 US | Low Silicate Blend1 Gallon | View on Amazon |
| PEAK Fits: all 1973 Taxicab engines | BMA1GAL | 🇺🇸 US | Blue Mountain Conventional Green1 Gallon | View on Amazon |
| PEAK Fits: all 1973 Taxicab engines | RUA1GAL | 🇺🇸 US | Conventional Green1 Gallon | View on Amazon |
| PEAK Fits: all 1973 Taxicab engines | FFA1GAL | 🇺🇸 US | Full Force Conventional Green1 Gallon | View on Amazon |
| PEAK Fits: all 1973 Taxicab engines | SEP1GAL | 🇺🇸 US | Sierra Conventional Green Concentrate Low Toxic Option1 Gallon | View on Amazon |
| PRESTONE Fits: all 1973 Taxicab 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.
15 Coolant / Antifreeze parts are listed for the 1973 Checker Taxicab, from PEAK, PRESTONE, FVP and 1 other brand. FVP MV5050GAL carries the "Popular" badge. All of them fit every engine offered in the 1973 Taxicab.
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 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 PEAK, FVP and PRESTONE — built to original-equipment specification. FVP GREEN5050GAL is listed in this group.
Radiator Hose
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Fits: 4.1L 250cid L6 | 31635 | 🇺🇸 US 🇨🇦 CA | Gold / ProfessionalFlexible | View on Amazon |
| ACDELCO Fits: 4.1L 250cid L6 | 31741 | 🇺🇸 US 🇨🇦 CA | Gold / ProfessionalFlexible | View on Amazon |
| ACDELCO Fits: 5.7L 350cid V8 | 31637 | 🇺🇸 US 🇨🇦 CA | Gold / ProfessionalFlexible | View on Amazon |
| DAYCO Fits: 4.1L 250cid L6 | 81141 | 🇺🇸 US | Flex Radiator Hose | View on Amazon |
| DAYCO Fits: 4.1L 250cid L6 | 81341 | 🇺🇸 US | Flex Radiator Hose | View on Amazon |
| DAYCO Fits: 5.7L 350cid V8 | 81171 | 🇺🇸 US | Flex Radiator Hose | View on Amazon |
| GATES Fits: 4.1L 250cid L6 | 25476 | 🇺🇸 US | Flexible | View on Amazon |
| GATES Fits: 4.1L 250cid L6 | 26611 | 🇺🇸 US | Flexible (Heavy-Duty) | View on Amazon |
| GATES Fits: 5.7L 350cid V8 | 25478 | 🇺🇸 US | Flexible | View on Amazon |
| GATES Fits: 5.7L 350cid V8 | 26501 | 🇺🇸 US | Flexible (Heavy-Duty) | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular Fits: 4.1L 250cid L6 | 22219M | 🇺🇸 US 🇨🇦 CA | Professional / GoldMolded | View on Amazon |
| DAYCO Popular Fits: 4.1L 250cid L6 | 70081 | 🇺🇸 US | Curved | View on Amazon |
| DAYCO Popular Fits: 5.7L 350cid V8 | 70344 | 🇺🇸 US | Curved | View on Amazon |
| GATES Popular Fits: 4.1L 250cid L6 | 21660 | 🇺🇸 US | Molded | View on Amazon |
| GATES Popular Fits: 5.7L 350cid V8 | 20416 | 🇺🇸 US | Molded | View on Amazon |
| ACDELCO Fits: 4.1L 250cid L6 | 24021L | 🇺🇸 US 🇨🇦 CA | Professional / GoldMolded | View on Amazon |
| ACDELCO Fits: 5.7L 350cid V8 | 24008L | 🇺🇸 US 🇨🇦 CA | Professional / GoldMolded | View on Amazon |
| ACDELCO Fits: 5.7L 350cid V8 | 31700 | 🇺🇸 US 🇨🇦 CA | Gold / ProfessionalFlexible | View on Amazon |
| DAYCO Fits: 4.1L 250cid L6 | 70391 | 🇺🇸 US | Curved | View on Amazon |
| DAYCO Fits: 5.7L 350cid V8 | 70218 | 🇺🇸 US | Curved | View on Amazon |
| GATES Fits: 4.1L 250cid L6 | 20584 | 🇺🇸 US | 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.
21 Radiator Hose parts for the 1973 Checker Taxicab come from 3 brands — ACDELCO, DAYCO and GATES. The "Popular" part is ACDELCO 22219M.
The Economy section: 10 options from GATES, ACDELCO and DAYCO. ACDELCO 31635 is listed in this group.
Standard Replacement: 11 parts, from ACDELCO, DAYCO and GATES. A representative part number is ACDELCO 22219M.
Thermostat
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES Fits: all 1973 Taxicab engines | 33508 | 🇺🇸 US | Economy | View on Amazon |
| GATES Fits: all 1973 Taxicab engines | 33509 | 🇺🇸 US | Economy | View on Amazon |
| MOTORAD Fits: all 1973 Taxicab engines | 300160 | 🇺🇸 US | Economy | View on Amazon |
| MOTORAD Fits: all 1973 Taxicab engines | 300195 | 🇺🇸 US | Economy | View on Amazon |
| MOTORAD Fits: all 1973 Taxicab engines | 300180 | 🇺🇸 US | Economy | View on Amazon |
Heavy Duty
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORAD Fits: all 1973 Taxicab engines | 5200160 | 🇺🇸 US | Ultra Stat | View on Amazon |
| MOTORAD Fits: all 1973 Taxicab engines | 5200180 | 🇺🇸 US | Ultra Stat | View on Amazon |
| MOTORAD Fits: all 1973 Taxicab engines | 5200195 | 🇺🇸 US | Ultra Stat | View on Amazon |
Performance
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORAD Popular Fits: all 1973 Taxicab engines | 2000160 | 🇺🇸 US | High Flow | View on Amazon |
| MOTORAD Popular Fits: all 1973 Taxicab engines | 2000180 | 🇺🇸 US | High Flow | View on Amazon |
| MOTORAD Popular Fits: all 1973 Taxicab engines | 2000195 | 🇺🇸 US | High Flow | View on Amazon |
| MOTORAD Fits: all 1973 Taxicab engines | MRD100 | 🇺🇸 US | Racing Thermostat | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORAD Fits: all 1973 Taxicab engines | 7200180 | 🇺🇸 US | Fail-Safe | View on Amazon |
| MOTORAD Fits: all 1973 Taxicab engines | 7200195 | 🇺🇸 US | Fail-Safe | View on Amazon |
| MOTORAD Fits: all 1973 Taxicab engines | 7200160 | 🇺🇸 US | Fail-Safe | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORAD Popular Fits: all 1973 Taxicab engines | 200195 | 🇺🇸 US | Standard | View on Amazon |
| MOTORAD Popular Fits: all 1973 Taxicab engines | 200180 | 🇺🇸 US | Standard | View on Amazon |
| CALORSTAT Fits: all 1973 Taxicab engines | TH137892 | 🇺🇸 US | PerformanceDoes Not Include Seal | View on Amazon |
| CALORSTAT Fits: all 1973 Taxicab engines | THF137892 | 🇺🇸 US | High EfficiencyLarger Main Valve Seat | View on Amazon |
| CALORSTAT Fits: all 1973 Taxicab engines | TH137896 | 🇺🇸 US | PerformanceDoes Not Include Seal | View on Amazon |
| GATES Fits: all 1973 Taxicab engines | 33009 | 🇺🇸 US | OE Type | View on Amazon |
| GATES Fits: all 1973 Taxicab engines | 33006 | 🇺🇸 US | OE Type | View on Amazon |
| GATES Fits: all 1973 Taxicab engines | 33008 | 🇺🇸 US | OE Type | View on Amazon |
| MOTORAD Fits: all 1973 Taxicab engines | 200205 | 🇺🇸 US | Standard | View on Amazon |
| MOTORAD Fits: all 1973 Taxicab engines | 200160 | 🇺🇸 US | 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.
25 Thermostat parts for the 1973 Checker Taxicab come from 3 brands — MOTORAD, GATES and CALORSTAT. The "Popular" part is MOTORAD 2000160. Every part fits both the 4.1L 250cid L6 and the 5.7L 350cid V8.
The Economy section: 5 options from MOTORAD and GATES. GATES 33508 is listed in this group.
In the Heavy Duty grade, MOTORAD supplies 3 parts: rated for severe service. A representative part number is MOTORAD 5200160.
The Performance section lists 4 options from MOTORAD — engineered beyond original-equipment specification. MOTORAD 2000160 is listed in this group.
Premium: 3 parts, from MOTORAD. A representative part number is MOTORAD 7200180.
Standard Replacement: 10 parts, from MOTORAD, CALORSTAT and GATES. A representative part number is MOTORAD 200195.
Thermostat / Thermostat Housing / Water Outlet Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO Popular Fits: all 1973 Taxicab engines | 35062 | 🇺🇸 US | 1-13/16 (In) Inside DiameterComposite Material | View on Amazon |
| GATES Popular Fits: all 1973 Taxicab engines | 33624 | 🇺🇸 US | Thermostat Gasket - 1 27/32" | View on Amazon |
| FEL-PRO Fits: 4.1L 250cid L6 | 13224 | 🇺🇸 US | Housing to Cylinder Head | View on Amazon |
| FEL-PRO Fits: all 1973 Taxicab engines | 35562T | 🇺🇸 US | Permadryplus | View on Amazon |
| MAHLE / CLEVITE Fits: 4.1L 250cid L6 | C25930 | 🇺🇸 US | Paper | View on Amazon |
| MAHLE / CLEVITE Fits: 4.1L 250cid L6 | C26544 | 🇺🇸 US | Paper | View on Amazon |
| MAHLE / CLEVITE Fits: all 1973 Taxicab engines | C24109 | 🇺🇸 US | PaperUniversal Type | View on Amazon |
| MAHLE / CLEVITE Fits: 4.1L 250cid L6 | C32721 | 🇺🇸 US | Molded Rubber with Plastic CarrierWater Outlet Seal | View on Amazon |
| VICTOR REINZ Fits: 4.1L 250cid L6 | 711353700 | 🇺🇸 US | Housing to HeadThermostat Seal | View on Amazon |
| VICTOR REINZ Fits: all 1973 Taxicab 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.
10 Thermostat / Thermostat Housing / Water Outlet Seal parts are listed for the 1973 Checker Taxicab, from MAHLE / CLEVITE, FEL-PRO, VICTOR REINZ and 1 other brand. FEL-PRO 35062 carries the "Popular" badge. 5 parts fit every engine; the other 5 are engine-specific.
Water Pump Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO Popular Fits: 5.7L 350cid V8 | 5152 | 🇺🇸 US | To Block3 Bolt Gasket | View on Amazon |
| FEL-PRO Fits: 4.1L 250cid L6 | 13243 | 🇺🇸 US | To BlockOriginal Equipment (OE) Part Number 3788478, 10003210, 10007042 | View on Amazon |
| FEL-PRO Fits: 5.7L 350cid V8 | 13032 | 🇺🇸 US | To BlockBacking Plate | View on Amazon |
| FEL-PRO Fits: 5.7L 350cid V8 | ES73030 | 🇺🇸 US | Gasket Kit | View on Amazon |
| MAHLE / CLEVITE Fits: 4.1L 250cid L6 | K26545 | 🇺🇸 US | Paper | View on Amazon |
| VICTOR REINZ Fits: 4.1L 250cid L6 | 711398300 | 🇺🇸 US | View on Amazon | |
| VICTOR REINZ Fits: 5.7L 350cid V8 | 711465400 | 🇺🇸 US | Paper | View on Amazon |
| VICTOR REINZ Fits: 5.7L 350cid V8 | 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 are listed for the 1973 Checker Taxicab, from FEL-PRO, VICTOR REINZ and MAHLE / CLEVITE. FEL-PRO 5152 carries the "Popular" badge.
Part numbers include FEL-PRO 5152, FEL-PRO 13243 and FEL-PRO 13032, among others listed above.
Water Pump Stud Kit
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ARP Fits: 5.7L 350cid V8 | 1343204 | 🇺🇸 US 🇨🇦 CA | Hex Bolt Head | View on Amazon |
| ARP Fits: 5.7L 350cid V8 | 1343203 | 🇺🇸 US 🇨🇦 CA | Black Oxide12 Point Bolt Head | View on Amazon |
| ARP Fits: 5.7L 350cid V8 | 4343203 | 🇺🇸 US 🇨🇦 CA | Stainless Steel12 Point Bolt Head | View on Amazon |
This table covers the Water Pump Stud kits.
3 Water Pump Stud Kit parts for the 1973 Checker Taxicab come from ARP.
This group includes ARP 1343204, ARP 1343203 and ARP 4343203.
Buying Cooling System Parts for a 1973 Checker Taxicab
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: Thermostat and Radiator Hose .
Frequently Asked Questions
How many cooling system parts fit the 1973 Checker Taxicab?
Our catalog currently lists 82 cooling system parts for the 1973 Checker Taxicab across 6 subcategories and 13 brands, covering both the 4.1L 250cid L6 and the 5.7L 350cid V8. Each part is matched to the engine(s) it fits.
Do cooling system parts differ between 1973 Checker Taxicab engines?
Some do. 45 parts fit every engine; the other 37 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 1973 Checker Taxicab?
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 1973 Checker Taxicab 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 1973 Checker Taxicab?
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 1973 Checker Taxicab
Cooling System Parts for Other Checker Taxicab Years
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