23020 Volvo Penta 3888822 Lower Unit Seal Kit for Volvo Penta DPS-A DPS-B | JLM Marine

Lower Unit Seal Kit – Fits Volvo Penta DPS-A & DPS-B Sterndrives

This aftermarket lower unit seal kit is engineered to fit Volvo Penta DPS-A and DPS-B sterndrive models, delivering reliable sealing performance for lower unit maintenance and rebuild applications. Designed to meet OEM specifications, this kit ensures proper protection against water intrusion and gear oil leakage.

Direct Replacements: Volvo Penta 3888822 | Orbitrade 23020

• Complete seal kit for lower unit overhaul and maintenance
• Fits Volvo Penta DPS-A and DPS-B sterndrive systems
• Manufactured to OEM specifications for reliable performance

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

This kit includes all seals necessary for lower unit maintenance and rebuild on Volvo Penta DPS-A and DPS-B sterndrive models. Verify contents against your service manual to ensure complete coverage for your specific application.

Installation Guide

1. Preparation: Disconnect the battery and remove the sterndrive unit from the boat following manufacturer procedures. Clean the lower unit exterior thoroughly to prevent contamination during disassembly.
2. Disassembly: Drain all gear oil from the lower unit. Remove the propeller, prop shaft, and housing components following your service manual sequence.
3. Remove Old Seals: Carefully extract all old seals, O-rings, and gaskets from their housings. Inspect seal surfaces for scoring, corrosion, or damage that may require additional repair.
4. Clean Seal Surfaces: Use a soft scraper and solvent to remove all residue from seal grooves and mating surfaces. Ensure all surfaces are clean, dry, and free of debris.
5. Install New Seals: Lubricate new seals lightly with gear oil. Press seals into place using appropriate seal drivers to avoid cocking or damage—ensure each seal seats fully and squarely.
6. Reassemble Lower Unit: Reinstall shafts, bearings, and housing components in reverse order of disassembly. Torque all fasteners to manufacturer specifications.
7. Refill Gear Oil: Fill the lower unit with the correct grade and quantity of gear oil as specified in your service manual. Check for leaks at all seal points.
8. Final Checks: Reinstall the sterndrive unit and reconnect the battery. Run the engine briefly and inspect for oil leaks or unusual operation before returning to water.

Troubleshooting & FAQ

Q: How do I confirm this seal kit fits my Volvo Penta sterndrive?
A: Verify your sterndrive model is DPS-A or DPS-B and cross-reference the OEM part number 3888822 or Orbitrade 23020 in your service manual or parts diagram. If your original part matches, this kit will fit.

Q: How often should I replace lower unit seals?
A: Replace seals during lower unit rebuilds or whenever you notice gear oil leakage, water contamination in the oil, or during major service intervals (typically every 3–5 years or as recommended by your service manual).

Q: What are the signs that my lower unit seals are failing?
A: Common symptoms include milky or discolored gear oil (indicating water intrusion), visible oil leaks around the lower unit, unusual noise or vibration during operation, and difficulty shifting gears.

Q: Can I reuse old seals if they look okay?
A: No. Seals lose elasticity and sealing ability once removed. Always replace all seals during lower unit service to ensure reliable performance and prevent future leaks.

Q: Do I need any special tools to install this seal kit?
A: Yes. Proper seal drivers, torque wrench, gear oil pump, and basic hand tools are required. Consult your Volvo Penta service manual for detailed procedures and specifications.

Q: What's the difference between OEM and aftermarket seal kits?
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.