12810-90J00 Tensioner Timing Chain| Genuine Used Part

🔧 Product Description

Genuine Used Suzuki DF90 / DF100 / DF115 / DF140 Timing Chain Tensioner - Part Number: 12810-90J00

A genuine pre-owned Suzuki Marine timing-chain tensioner arm for selected first-generation DF90, DF100, DF115 and DF140 four-stroke outboards.

This component provides the guided wear surface against which the automatic adjuster applies force. It should not be confused with the separate hydraulic or ratcheting adjuster assembly 12831-90J02.

⚙️ Key Features

• Genuine Suzuki Marine used timing-chain tensioner
• Correct OEM part number 12810-90J00
• Suitable for selected 90HP to 140HP four-strokes
• Works with automatic adjuster 12831-90J02
• Used on Suzuki-built Johnson four-stroke equivalents
• Original timing-chain wear-surface component

🚤 Compatibility

Commonly used on

• Suzuki DF90 four-stroke outboards
• Suzuki DF100 four-stroke outboards
• Suzuki DF115 four-stroke outboards
• Suzuki DF140 four-stroke outboards
• Suzuki-built Johnson 90HP to 140HP four-stroke engines where the Suzuki number is specified
• Horsepower Range: 90HP - 140HP
• Engine Configuration: Inline four-cylinder four-stroke
• Representative Production Period: Early 2000s through approximately 2012, model and serial-number dependent

Important fitment note

• Confirm the engine model, year and starting VIN.
• DF90A, DF100A, DF115A and DF140A engines may use a different timing arrangement.
• The automatic adjuster is a separate part.

🔌 Function

The tensioner arm presses against the timing chain under force from the automatic adjuster.

It maintains chain control as the chain expands and contracts with temperature and gradually wears.

⚠️ Common Signs of Failure

• Deep grooves in the contact surface
• Cracked or missing wear material
• Chain rattle
• Timing-chain slack
• Exposed metal backing
• Uneven chain tracking
• Cam timing faults
• Difficult starting or reduced performance

🛠️ Service Notes

Recommended checks before installation

• Inspect the complete wear face
• Check the pivot or mounting point
• Inspect the automatic adjuster
• Check the timing chain for elongation
• Inspect all sprockets and fixed guides
• Reset or release the adjuster according to the service manual
• Rotate the engine by hand and verify all timing marks

🔄 Supersession & Cross Reference

OEM Supersession Chain

• No verified superseding number identified for 12810-90J00

OEM / Related Numbers

• 12810-90J00
• 1281090J00
• 12810-90J00-000
• OEM Description: Tensioner, Timing Chain
• Related tensioner pad: 12813-73G00
• Related spacer: 12812-90J00
• Related adjuster: 12831-90J02
• Related guide: 12771-90J00

Aftermarket / Verified Equivalents

• No aftermarket equivalent

📦 Condition

• Genuine Suzuki Marine used part
• Pre-owned internal engine component
• Wear marks and oil staining may be present
• Inspect against the factory wear limit before installation
• New timing components are generally preferred during major overhaul
• Supplied in protective or equivalent packaging