INSTALLATION TIP
Aluminum Cam Gear Installation Tip
Learn the safe heating method for installing a press-fit aluminum camshaft gear and why aluminum is an upgrade from a fiber-tooth design.
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INSTALLATION TIP
The Importance of Clean, Quality Oil in Timing Chain Systems
Using the wrong oil is a common symptom that causes a vehicle’s timing chain to wear even quicker.Learn how dirty or incorrect oil affects timing chains, hydraulic tensioners, and VVT phasers—and why the specified oil and service interval matter.
INSTALLATION TIP
Timing Chain System Frequently Asked Questions
Get answers to common timing-chain questions, including replacement timing, warning signs, noise causes, oil requirements, and related repairs.
2525S
Engine Timing Gear Set
Engine Timing Gear SetStock Replacement
Since 1921, Cloyes has been the trusted leader in automotive timing systems delivering premium-quality solutions. Cloyes engine timing gear sets are engineered for precision, durability, and optimal engine performance. Sets include a crankshaft gear and camshaft gear. To ensure total timing system integrity, Cloyes recommends replacing all engine timing components. Trusted by professionals for over a century & backed by an industry-leading warranty and technical support.
- All timing gears are CAD designed in the USA.
- Manufactured using premium material and heat-treated if applicable.
- OE-level fit function, allowing for smooth installation and reliable performance.
- Featuring precision-tooled tooth form, bore, off-set and timing index for superior fit, reliability, and long-term performance in engine timing repairs.
- Gears are extensively tested for profile, index, and lead for proper backlash and function, to ensure durability.
- Backed by Limited Lifetime Warranty and over 100 years in engineering leadership with unmatched technical support and repair confidence in every set.
| Make | Model | Year | Engine |
|---|---|---|---|
| Checker | Deluxe | 1969 | L6 4.1L |
| Checker | Marathon | 1965-1968 | L6 3.8L |
| Checker | Marathon | 1969-1976 | L6 4.1L |
| Chevrolet | Bel Air | 1965 | L6 3.8L |
| Chevrolet | Bel Air | 1970-1973 | L6 4.1L |
| Chevrolet | Biscayne | 1965 | L6 3.8L |
| Chevrolet | Biscayne | 1970-1972 | L6 4.1L |
| Chevrolet | Blazer | 1970-1974 | L6 4.1L |
| Chevrolet | C10 | 1975-1976 | L6 4.1L |
| Chevrolet | C10 Pickup | 1965-1969 | L6 3.8L |
| Make / Model | Year / Engine |
|---|---|
| CheckerDeluxe | 1969L6 4.1L |
| CheckerMarathon | 1965-1968L6 3.8L |
| CheckerMarathon | 1969-1976L6 4.1L |
| ChevroletBel Air | 1965L6 3.8L |
| ChevroletBel Air | 1970-1973L6 4.1L |
| ChevroletBiscayne | 1965L6 3.8L |
| ChevroletBiscayne | 1970-1972L6 4.1L |
| ChevroletBlazer | 1970-1974L6 4.1L |
| ChevroletC10 | 1975-1976L6 4.1L |
| ChevroletC10 Pickup | 1965-1969L6 3.8L |
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