Camshaft Gear – Fits Volvo Penta 3.0L–5.7L Engines 117–150 HP - JLM Marine Boat Parts Limited
Camshaft Gear – Fits Volvo Penta 3.0L–5.7L Engines 117–150 HP - JLM Marine Boat Parts Limited
Camshaft Gear – Fits Volvo Penta 3.0L–5.7L Engines 117–150 HP - JLM Marine Boat Parts Limited
Camshaft Gear – Fits Volvo Penta 3.0L–5.7L Engines 117–150 HP - JLM Marine Boat Parts Limited
Camshaft Gear – Fits Volvo Penta 3.0L–5.7L Engines 117–150 HP - JLM Marine Boat Parts Limited
Camshaft Gear – Fits Volvo Penta 3.0L–5.7L Engines 117–150 HP - JLM Marine Boat Parts Limited

Camshaft Gear – Fits Volvo Penta 3.0L–5.7L Engines 117–150 HP

Vendor: JLM Marine
Availability: Out Of Stock
Product Type: Tensioner Pulley
$999.00
$999.00
Subtotal: $999.00

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Camshaft Gear – Fits Volvo Penta 3.0L–5.7L Engines 117–150 HP - JLM Marine Boat Parts Limited

Camshaft Gear – Fits Volvo Penta 3.0L–5.7L Engines 117–150 HP

$999.00
Camshaft Gear – Fits Volvo Penta 3.0L–5.7L Engines 117–150 HP - JLM Marine Boat Parts Limited
Camshaft Gear – Fits Volvo Penta 3.0L–5.7L Engines 117–150 HP - JLM Marine Boat Parts Limited
Camshaft Gear – Fits Volvo Penta 3.0L–5.7L Engines 117–150 HP - JLM Marine Boat Parts Limited

Camshaft Gear – Fits Volvo Penta 3.0L–5.7L Engines 117–150 HP

$999.00
Description

Camshaft Gear – Fits Volvo Penta 3.0L–5.7L Engines

This replacement camshaft gear is engineered for Volvo Penta 4-cylinder 3.0L engines, covering models from 1979 to 1993 with horsepower ratings between 117 and 150 HP. It ensures precise valve timing and reliable engine performance, serving as a direct-fit component for a range of popular sterndrive engines.

This gear directly replaces Volvo Penta OEM part numbers 856239, 855473, and 831972.

  • Installation Method: Direct OEM replacement
  • Material: Constructed from high-strength Forged Steel for durability
  • Replaces multiple legacy Volvo Penta part numbers for broad compatibility

Part Number Cross-Reference

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

Brand Part Number
Volvo Penta 856239
Volvo Penta 855473
Volvo Penta 831972

Compatible Engine Models

Confirm your engine model/year in the table below.

Brand Model Rated HP Stroke Years OEM Part No. Notes
Volvo Penta AQ125A 117 HP 4-Stroke 1983–1984 856239
Volvo Penta AQ131 A, B, C, D 120 HP 4-Stroke 1985–1993 856239
Volvo Penta AQ145B 138–139 HP 4-Stroke 1979–1988 856239
Volvo Penta AQ151 A, B, C 146–150 HP 4-Stroke 1989–1993 856239
Volvo Penta 230 120 HP 4-Stroke 1989–1993 856239
Volvo Penta 250 146 HP 4-Stroke 1989–1993 856239

Technical Specifications

Specification Value
Product Type Camshaft Gear / Timing Gear
Installation Direct OEM replacement
Housing Material Metal (Forged Steel)
Dimensions 5.5 cm (height) × 15.5 cm (width) × 18.0 cm (length)
Weight 0.51 kg (1.12 lbs)
Warranty 1-year against manufacturing defects

Explosion Diagram

Explosion Diagram

Installation Guide

  1. Safety First: Disconnect the negative battery terminal to prevent electrical hazards.
  2. Drain Fluids: Drain the engine coolant and oil completely.
  3. Access Components: Remove the valve cover, timing belt cover, and any accessories blocking access.
  4. Remove Belt: Carefully release tension from the timing belt and remove it.
  5. Align Marks: Rotate the engine manually to align the timing marks on the crankshaft and camshaft pulleys.
  6. Remove Old Gear: Loosen the bolt securing the camshaft gear and remove the old gear from the camshaft.
  7. Install New Gear: Place the new camshaft gear onto the camshaft, ensuring the timing marks remain perfectly aligned. Tighten the bolt to the manufacturer's torque specification.
  8. Reinstall Belt: Reinstall the timing belt and set the correct tension using a tensioner tool.
  9. Reassembly: Reinstall the timing cover, valve cover, and any other components that were removed.
  10. Refill and Test: Refill the engine with fresh coolant and oil. Reconnect the battery, start the engine, and listen for abnormal noises and check for leaks.

Troubleshooting & FAQ

Q: How do I confirm this camshaft gear fits my Volvo Penta engine?
A: Check that your engine model (e.g., AQ131A, 230) and year of manufacture (1979–1993) are listed in our compatibility table. You should also verify that your existing part number is one of the direct replacements: 856239, 855473, or 831972.

Q: What are the signs that my camshaft gear needs replacement?
A: Common symptoms of a failing camshaft gear include a rattling or ticking noise from the engine bay, loss of power, engine misfires, rough idling, or a Check Engine Light related to camshaft timing. A visual inspection may reveal worn, chipped, or broken teeth on the gear.

Q: What is this gear made of?
A: This gear is manufactured from high-strength forged steel, designed to meet or exceed original equipment specifications for durability and precise valve timing.

Q: OEM vs. Aftermarket?
A: 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.

Q: How fast do you ship and how much does it cost?
A: 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.

Q: What is your warranty and return policy?
A: 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.
Shipping

We can ship to virtually any address in the world with free shipping available for most regions.

For our typical US and Canadian customers , our shipping timeframes are as follows:

  • Amazon FBA: orders will be delivered within 1-5 business days after placing the order (during certain special periods such as major promotions, Christmas, etc., the delivery time of Amazon FBA may be affected).
  • US warehouse shipment: orders will be delivered within 5 days after placing the order.
  • China warehouse shipment: orders will be delivered about 12 days after placing the order.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

About JLM Marine

Founded in 2002, JLM Marine has established itself as a dedicated manufacturer of high-quality marine parts, based in China. Our commitment to excellence in manufacturing has earned us the trust of top marine brands globally.

As a direct supplier, we bypass intermediaries, which allows us to offer competitive prices without compromising on quality. This approach not only supports cost-efficiency but also ensures that our customers receive the best value directly from the source.

We are excited to expand our reach through retail channels, bringing our expertise and commitment to quality directly to boat owners and enthusiasts worldwide.

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