Aftermarket Drive Bellows for Volvo Penta AQ100/100B/100S 875827-8

Drive Bellows Kit – Fits Volvo Penta AQ100/100B/100S (Replaces 875827-8, 875512)

This is a drive bellows kit designed for Volvo Penta AQ100 series sterndrives (80–115 HP, 1958–1975) and the 100S Sail Drive. It protects the U-joint assembly from water intrusion. Constructed from a high-grade, UV and oil-resistant marine rubber compound, this kit ensures a durable, watertight seal. It is a direct replacement for Volvo Penta part numbers 875827-8 and 875512, as well as Sierra 18-2755.

• Material: High-grade marine rubber compound
• Installation Method: Clamp-on with included stainless steel clamps
• Compatibility: Fits Volvo Penta AQ100 series and 100S Sail Drive models

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM andbrands.

Compatible Engine Models

Confirm your engine model/year in the table below.

Technical Specifications

Package Contents

• 1 x Drive Bellows Assembly (Replaces Sierra 18-2755)
• 2 x Stainless Steel Hose Clamps (Replaces Sierra 18-710-80-2, 4-9/16" to 5-1/2")

Installation Guide

Professional installation is recommended. This procedure requires intermediate mechanical skills.

Skill Level: Intermediate (3-4 hours installation time)
Required Tools: Socket set (metric and standard), torque wrench (10-50 ft-lbs), marine-grade sealant, hose clamp pliers, and drive unit alignment tools.

1. Disconnect the battery and drain the drive unit oil completely.
2. Remove the drive unit from the transom assembly according to the manufacturer's service manual.
3. Carefully cut and remove the old bellows and clamps. Thoroughly clean and inspect all mating surfaces on the drive and transom shield.
4. Install the new bellows, ensuring it is properly seated and aligned without any twists.
5. Secure the new stainless steel clamps. Do not overtighten.
6. Reinstall the drive unit, applying marine-grade sealant to any required bolts.
7. Torque all fasteners to the manufacturer's specification (typically 25-30 ft-lbs for mounting bolts).
8. Refill the drive unit with the correct lubricant, and check for any leaks after running the engine.

Troubleshooting & FAQ

Q: How do I know if this bellows kit will fit my Volvo Penta engine?
A: This kit is designed for the Volvo Penta AQ100 series (including AQ80, AQ100, AQ100B, AQ100S, AQ105A, AQ110, AQ115A/B) and the 100S Sail Drive. Always verify your required OEM part numbers against our listed replacements (875827-8, 875512) and consult the compatible models table.

Q: How often should I replace the drive bellows?
A: Inspect the bellows annually for cracks, swelling, or deterioration. Under normal operating conditions, a replacement is recommended every 5-7 years to prevent water intrusion and costly drive component damage.

Q: What are the signs of a failing drive bellows?
A: Common indicators include water in the bilge, increased steering stiffness, visible oil leakage from the drive unit, or unusual vibrations during operation. Replace the bellows immediately if you notice any of these symptoms.

Q: OEM vs. Aftermarket?
A: This listing is anreplacement 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 anreplacement 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.