SKU: 43688806937

1100-8M0021648 Tilt End Cap Seal Guide Assembly for Mercury Mariner | JLM Marine

Sale price$66.56 Regular price$73.95
Save 10%

Pay in installments of $18.49 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 14 - Aug 19

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

1100-8M0021648 Tilt End Cap Seal Guide Assembly for Mercury Mariner | JLM MarineTilt End Cap Seal Guide Assembly Fits Mercury Mariner Generation 1, 2 & 3 3 Ram Style Trim Units This Tilt End Cap Seal Guide Assembly is engineered as a direct replacement for Mercury Mariner Generation 1, 2, and 3 three ram style trim units. Manufactured from aircraft grade aluminum with Viton and high grade urethane seals, it delivers professional level reliability and durability for demanding marine environments. This assembly directly replaces

Tilt End Cap Seal Guide Assembly – Fits Mercury Mariner Generation 1, 2 & 3 3-Ram Style Trim Units

This Tilt End Cap Seal Guide Assembly is engineered as a direct replacement for Mercury Mariner Generation 1, 2, and 3 three-ram style trim units. Manufactured from aircraft-grade aluminum with Viton and high-grade urethane seals, it delivers professional-level reliability and durability for demanding marine environments.

This assembly directly replaces OEM part numbers 1100-8M0021648, 99638A1, 8M0021648, and 878243A1, restoring optimal trim cylinder performance and extending service life.

  • Constructed from aircraft-grade aluminum with hard anodized coating (Type 3 military-grade) for anti-wear, rust resistance, and anti-oxidation
  • Includes Viton and high-grade urethane seals for superior sealing performance
  • Perfect replacement for worn or damaged trim cylinder end caps—significantly improves work efficiency

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket sources:

Brand Part Number
Mercury 1100-8M0021648
Mercury 99638A1
Mercury 8M0021648
Mercury 878243A1

Compatible Engine Models

Confirm your engine model/year in the table below. For Mercury owners, here's a guide to help you identify your engine's serial/model: Mercury Serial Number Guide. You can also review exploded diagrams to verify part numbers: Mercury Parts Diagrams & Catalog.

Brand Model Notes
Mercury / Mariner Generation 1, 2 & 3 3-Ram Style Trim Units

Technical Specifications

Specification Value
Material Aircraft-Grade Aluminum, Viton & High-Grade Urethane Seals
Surface Treatment Hard Anodized (Type 3 Military-Grade Coating)
Application Mercury Mariner Generation 1, 2 & 3 3-Ram Style Trim Units
Function Tilt End Cap Seal Guide Assembly for Trim Cylinder

Package Contents

Each package includes:

  • 1 × Tilt Cap/Gland with Seals
  • All components shown in the product images

Installation Guide

  1. Disconnect the battery and relieve all hydraulic pressure from the trim/tilt system before beginning work.
  2. Remove the trim cylinder from the outboard motor following your engine's service manual procedures.
  3. Carefully disassemble the old end cap assembly, noting the orientation of seals and components.
  4. Clean the cylinder bore and piston rod thoroughly, inspecting for scoring or damage.
  5. Lubricate the new seals with marine-grade hydraulic fluid before installation.
  6. Install the new end cap seal guide assembly, ensuring all seals are properly seated and oriented.
  7. Torque the end cap to manufacturer specifications (refer to your Mercury service manual).
  8. Reinstall the trim cylinder onto the outboard motor, ensuring proper alignment.
  9. Refill the hydraulic system with the correct type and quantity of trim/tilt fluid.
  10. Bleed air from the system by cycling the trim/tilt mechanism several times.
  11. Check for leaks around the end cap and all hydraulic connections.
  12. Test the trim/tilt operation under no-load and normal operating conditions before returning to service.

Troubleshooting & FAQ

Q: How do I confirm this fits my Mercury trim unit?
A: This assembly is designed for Mercury Mariner Generation 1, 2, and 3 three-ram style trim units. Cross-reference your current part number (1100-8M0021648, 99638A1, 8M0021648, or 878243A1) or consult the Mercury parts diagrams linked above to verify compatibility with your specific model.

Q: What are the signs that my trim cylinder end cap needs replacement?
A: Common symptoms include hydraulic fluid leaking from the end cap area, slow or inconsistent trim/tilt operation, loss of hydraulic pressure, or visible seal damage during inspection. If you notice any of these issues, replacing the end cap assembly can restore proper function.

Q: How does this aftermarket assembly compare to the OEM part in terms of materials?
A: This assembly is constructed from aircraft-grade aluminum with a Type 3 military-grade hard anodized coating, paired with Viton and high-grade urethane seals. These materials meet or exceed OEM specifications for durability, corrosion resistance, and sealing performance in marine environments.

Q: Can I install this myself or do I need a professional?
A: Installation requires disassembly of the trim cylinder, proper torque specifications, and bleeding the hydraulic system. If you have mechanical experience and the appropriate tools, DIY installation is possible. However, professional installation is recommended to ensure safety and optimal performance.

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 Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 43688806937

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.9 ★★★★★
Based on 5 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
M
Verified Purchase
Mary Holmes
San Leandro, US
★★★★★ 4
Nice pp
Size: 8.5"x11"
Works good but kind of expensive
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 23, 2026
F
Verified Purchase
funnygirl
San Leandro, US
★★★★★ 5
Good choice in sublimation paper!
Size: 8.5"x14"
Good printer compatibility with my Epson printer. Very smooth. No jamming in my printer. I use a lot of of sublimation paper lots of projects going on. Need to def to stock up
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 12, 2026
G
Verified Purchase
Glenda Breland
Phoenix, US
★★★★★ 5
Vibrant Results and Great Value!
Size: 13"*19", Color: 150 sheets
HTVRONT Sublimation Paper 13x19 inches – 150 Sheets Review I recently purchased the HTVRONT Sublimation Paper (13x19 inches, 150 sheets, 120g) and I’m genuinely impressed with the results! As someone who does a lot of sublimation printing for both personal and small business projects, I found this paper to be a fantastic choice. Pros: Excellent Print Quality: The colors transfer beautifully and vibrantly onto my blanks. Images come out crisp and true to the original design. Generous Size: The 13x19 inch sheets are perfect for larger projects like T-shirts, tote bags, and even custom pillowcases. It’s great not having to piece together smaller sheets. Easy to Use: The paper feeds smoothly through my inkjet printer with no jams or smudging. Instructions were clear, making the process straightforward even for beginners. Consistent Results: Every sheet in the pack performed consistently, with no noticeable defects or wasted paper. Value for Money: With 150 sheets in the pack, it’s a great deal for the price, especially for anyone who does frequent sublimation work. Cons: Requires Sublimation Ink: Just a reminder that you’ll need sublimation ink for best results (not regular inkjet ink). Storage: The large size means you’ll need a bit of space to store the pack, but that’s a minor issue. Overall: I highly recommend the HTVRONT Sublimation Paper for anyone looking for reliable, high-quality results. It’s perfect for both hobbyists and small business owners. I’ll definitely be purchasing again!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 25, 2025
M
Verified Purchase
Maryann Cairo
Carnegie, US
★★★★★ 5
Excellent Sublimation Paper – Perfect Prints Every Time!
Size: 8.5"*11", Color: 150 sheets
This sublimation paper is fantastic! It’s high-quality and works perfectly with my sublimation printer. The prints come out vibrant, sharp, and transfer beautifully onto mugs, shirts, and other materials without smudging or fading. The paper is easy to handle, doesn’t jam in the printer, and holds the ink well for a clean transfer. I’ve tried other brands before, but this one consistently gives professional-looking results. Definitely a must-have for anyone doing sublimation printing!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 13, 2025
K
Verified Purchase
Kelly Farrow
Omaha, US
★★★★★ 5
This paper prints beautifully!
Size: 8.5"*11", Color: 150 sheets
Great sublimation paper. I usually use A Sub but ordered this because it delivered faster, and now this is the paper I’ll be using! It prints wonderfully! The ink release is amazing! There’s hardly any ink left in the paper and my shirts look incredible. The paper is a great weight and doesn’t jam at all. If you’ve been disappointed with your sub print quality, give this paper a try. You won’t be disappointed!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 11, 2026

recommand products