Tension Pulley – Fits Volvo Penta KAD/KAMD/TAMD Engines 170-300 HP (Replaces 861563, 877180)

Tension Pulley – Fits Volvo Penta KAD/KAMD/TAMD Engines 170-300 HP (Replaces 861563, 877180)

This high-quality tension pulley is designed for Volvo Penta marine diesel engines in the KAD, KAMD, and TAMD series (170–300 HP), specifically for models manufactured between 1995 and 2005. It ensures proper drive belt tension for reliable engine accessory operation.

It serves as a direct replacement for Volvo Penta part numbers 861563 and 877180, as well as other aftermarket equivalents, offering a precise fit and durable performance.

• Installation Location: Mounts to the belt tensioner assembly.
• Durable Construction: Made from a high-strength, wear-resistant material to withstand engine bay conditions.
• Precise Fit: Engineered to meet or exceed OEM specifications for a direct, hassle-free installation.

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Compatible Engine Models

Confirm your engine model/year in the table below.

Technical Specifications

Package Contents

• 1 x Tension Pulley (Replaces 861563 / 877180)

Explosion Diagram

Installation Guide

1. Safety First: Turn off the engine and allow it to cool completely. Disconnect the negative battery cable to prevent accidental starts.
2. Access the Belt: Locate and loosen the belt tensioner assembly to relieve tension, then carefully remove the old drive belt from the pulleys.
3. Remove Old Pulley: Unbolt and remove the old or damaged tension pulley from its mounting bracket on the tensioner assembly.
4. Install New Pulley: Position the new tension pulley onto the bracket and tighten the mounting bolts to the manufacturer's recommended torque specifications.
5. Reinstall Belt: Route the drive belt back onto all pulleys according to the engine's diagram. Adjust the tensioner to apply the correct tension, using a belt tension gauge for accuracy if available.
6. Final Check: Reconnect the negative battery cable. Start the engine and listen for any unusual noises, visually confirming the pulley and belt are operating smoothly.

Troubleshooting & FAQ

How do I know if this tension pulley is the correct part for my Volvo Penta engine?
This pulley fits specific KAD, KAMD, and TAMD series engines (170-300 HP) from 1995-2005. The best way to confirm fitment is to cross-reference your engine model with the "Compatible Engine Models" table and verify that your old part number is 861563 or 877180.

What are the signs of a failing tension pulley?
Common symptoms include a persistent squealing, chirping, or grinding noise from the engine bay, especially during startup or acceleration. You may also notice uneven or premature wear on the drive belt, or visible wobble in the pulley itself.

Is this a direct replacement for both Volvo Penta 861563 and 877180?
Yes, this part is designed as a direct-fit replacement for both OEM part numbers 861563 and 877180, ensuring compatibility without modification.

OEM vs. Aftermarket?
This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

How fast do you ship and how much does it cost?
We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

What is your warranty and return policy?
This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

• Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
• This product is an aftermarket replacement part and is not an OEM component.
• Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

• Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
• Fast Global Shipping: Free delivery worldwide in 5–15 days.
• Direct from Manufacturer: Competitive pricing without compromising quality.