12 Belt drive parts are listed for the 1981 Checker Marathon, in 2 part types, covering all 4 engine options (3.8L 229cid V6, 4.4L 267cid V8, 5.0L 305cid V8 and 5.7L 350cid V8 DIESEL). Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 1981 Checker Marathon, the belt drive system spins the accessories — serpentine and V-belts, tensioners, idlers and pulleys. All 12 listed parts are Belt (10 parts) and Idler Pulley (2 parts).
The 1981 Checker Marathon was sold with 4 engines. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
3 brands supply belt drive parts for the 1981 Checker Marathon, led by CONTINENTAL (10 parts), FOUR SEASONS (1 part) and HAYDEN (1 part). Quality grades include Standard Replacement and Economy.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 1981 Checker Marathon. 3 parts have it, including CONTINENTAL 15480MK (Belt) and CONTINENTAL 15370MK (Belt). Each part number opens a page with every vehicle that part fits.
Belt
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CONTINENTAL Popular Fits: 3.8L 229cid V6, 4.4L 267cid V8, 5.0L 305cid V8 | 15480MK | 🇺🇸 US 🇨🇦 CA | Mileage MakerBelt Length: 48.00 In | View on Amazon |
| CONTINENTAL Popular Fits: 5.0L 305cid V8, 3.8L 229cid V6 | 15370MK | 🇺🇸 US 🇨🇦 CA | Mileage MakerBelt Length: 37.00 In | View on Amazon |
| CONTINENTAL Fits: 3.8L 229cid V6 | 15555MK | 🇺🇸 US 🇨🇦 CA | Mileage Maker | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CONTINENTAL Popular Fits: 3.8L 229cid V6 | 15436 | 🇺🇸 US 🇨🇦 CA | Fan and Power Steering | View on Amazon |
| CONTINENTAL Fits: 3.8L 229cid V6, 5.0L 305cid V8 | 15376 | 🇺🇸 US 🇨🇦 CA | V-BeltBelt Length: 37.60 In | View on Amazon |
| CONTINENTAL Fits: 3.8L 229cid V6, 4.4L 267cid V8, 5.0L 305cid V8 | 15485 | 🇺🇸 US 🇨🇦 CA | V-BeltBelt Length: 48.50 In | View on Amazon |
| CONTINENTAL Fits: 3.8L 229cid V6, 4.4L 267cid V8, 5.0L 305cid V8 | 15475 | 🇺🇸 US 🇨🇦 CA | V-BeltBelt Length: 47.50 In | View on Amazon |
| CONTINENTAL Fits: 3.8L 229cid V6 | 15561 | 🇺🇸 US 🇨🇦 CA | Air Conditioning and Power Steering | View on Amazon |
| CONTINENTAL Fits: 4.4L 267cid V8, 5.0L 305cid V8 | 15411 | 🇺🇸 US 🇨🇦 CA | Power Steering | View on Amazon |
| CONTINENTAL Fits: 4.4L 267cid V8 | 15565 | 🇺🇸 US 🇨🇦 CA | V-BeltBelt Length: 56.50 In | View on Amazon |
This table covers the serpentine and accessory belts that drive the front accessories. Typical signs include squeal on cold start, cracks across the ribs, or glazing on the back of the belt. A new belt on a worn tensioner will squeal within weeks — spin the idlers by hand while the belt is off.
10 Belt parts for the 1981 Checker Marathon come from CONTINENTAL. The "Popular" part is CONTINENTAL 15480MK.
The Economy section lists 3 options from CONTINENTAL — the catalog's value-priced group. CONTINENTAL 15480MK is listed in this group.
In the Standard Replacement grade, CONTINENTAL supplies 7 parts: built to original-equipment specification. A representative part number is CONTINENTAL 15436.
Idler Pulley
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FOUR SEASONS Fits: 5.7L 350cid V8 DIESEL | 45065 | 🇺🇸 US 🇨🇦 CA | Grooved | View on Amazon |
| HAYDEN Fits: 5.7L 350cid V8 DIESEL | 5065 | 🇺🇸 US 🇨🇦 CA | Grooved | View on Amazon |
This table covers the idler pulleys the belt wraps around. Typical signs include a chirp that follows engine speed, or a pulley that feels rough or has play. Replace a noisy idler with the belt — the labor is already paid for.
2 Idler Pulley parts for the 1981 Checker Marathon come from 2 brands — FOUR SEASONS and HAYDEN.
Listed part numbers: FOUR SEASONS 45065 and HAYDEN 5065.
Buying Belt Drive Parts for a 1981 Checker Marathon
On this vehicle, the belt drive system spins the accessories — serpentine and V-belts, tensioners, idlers and pulleys.
- Match the engine first. Every belt drive part here is 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 tensioner and idler pulleys with any belt at higher mileage — the labor overlaps almost entirely.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Belt and Idler Pulley .
Frequently Asked Questions
How many belt drive parts fit the 1981 Checker Marathon?
Our catalog currently lists 12 belt drive parts for the 1981 Checker Marathon across 2 subcategories and 3 brands, covering all 4 engine options (3.8L 229cid V6, 4.4L 267cid V8, 5.0L 305cid V8 and 5.7L 350cid V8 DIESEL). Each part is matched to the engine(s) it fits.
Do belt drive parts differ between 1981 Checker Marathon engines?
Yes. Every belt drive part on this page is engine-specific. Each row shows which engine(s) it fits — use the filter at the top to hide the rest. 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 belt drive problems on a 1981 Checker Marathon?
Common symptoms include squealing on cold start, a belt that shows cracking or glazing, or an accessory that slows under load. 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 tensioner and idler pulleys with any belt at higher mileage — the labor overlaps almost entirely.
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 1981 Checker Marathon 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 1981 Checker Marathon?
First match the engine — each row shows which engine(s) the part fits. Then a new belt on a worn tensioner will squeal within weeks — check tensioner damping and idler bearings while the belt is off. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 1981 Checker Marathon
Belt Drive Parts for Other Checker Marathon Years
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