Power Trim Cylinder Seal Kit 25-87400A2 for MerCruiser MR Alpha One Bravo
Power Trim Cylinder Seal Kit 25-87400A2 for MerCruiser MR Alpha One Bravo
Product Overview
Power trim cylinder seal kit, a hydraulic repair kit for Mercury MerCruiser trim systems, supplied as 1 x complete seal kit. It replaces MerCruiser 25-87400A2 and 87400, and Sierra 18-2649. The kit covers the seals and O-rings inside the trim cylinder, which is where a drive starts to creep down overnight, leaves oil on the water, or loses power trim at the top of the range. Replacing the seals rather than the whole cylinder is the normal repair on these drives, and it takes one afternoon on the bench.
Specifications & Attributes
| Specification | Detail |
|---|---|
| Condition | New / New with tags |
| Type | Power Trim Cylinder Seal Kit |
| Engine | MerCruiser R, MR, Alpha One, Alpha One Gen II, Bravo |
| System | Power trim and tilt hydraulic cylinder |
| Quantity | 1 complete seal kit |
| Shipping Weight | 22 g |
| Packaging Size | 10 x 8 x 3 cm (3.9 x 3.1 x 1.2 in) |
OEM Cross Reference
| Brand | OEM Part Numbers |
|---|---|
| MerCruiser | 25-87400A2 |
| MerCruiser | 87400 |
| Sierra | 18-2649 |
Compatible Engines
| Drive | Years |
|---|---|
| R / MR / Alpha One, sterndrive | 1983-1990 |
| R / MR / Alpha One, transom assembly | 1983-1990 |
| Alpha One Gen II | 1991-1995 |
| Alpha One Gen II | 1996-1997 |
| Alpha One Gen II | 1998 and up |
| Blackhawk | 1994-1995 |
| Bravo One, Bravo Two, Bravo Three | All years |
| Bravo X One, X Two, X Three | All years |
| Bravo XR One, XR Three, XR Sportmaster | All years |
| Bravo XZ One, Hi Performance Transom, Integrated Transom | All years |
What's Included
| Component | Qty |
|---|---|
| Trim Cylinder Seal Kit | 1 |
Condition & Warranty
| Item | Detail |
|---|---|
| Condition | New / New with tags |
| Warranty | Standard |
| Packaging | Sealed retail packaging |
Before You Buy
- Check the drive model and year against the table, Gen II and Bravo share this kit
- Inspect the cylinder bore and piston rod for scoring before fitting new seals
- Lubricate the seals with trim fluid, not grease, on assembly
- Bleed the system and top up the reservoir after the repair
- 30-Day Easy Returns
- Free Worldwide Shipping
Couldn't load pickup availability
Boat Owners' Review
Before You Buy
Frequently Asked Questions
What is your refund policy?
We offer a 14-day hassle-free return on all products. Items must be unused and in original packaging. Every XRmarine part is also covered by our 1-year warranty against manufacturing defects. If something is not right, email us at info@xrmarineparts.com — replacement or full refund, your choice.
See our full Refund Policy for complete details.
How does shipping work?
Free international shipping on every order — no minimums. We operate a global warehouse network with a main distribution centre in Asia (10-20 business days). We also hold stock in regional warehouses across the United States, Germany, the United Kingdom, Australia, and Poland (opening soon) — most orders arrive in 1-3 business days within those countries and in 2-8 business days to nearby regions. Tracking included.
See our full Shipping Policy.
How do you keep prices fair?
We cut out the middlemen. XRmarine sources directly from quality manufacturers and sells at honest prices. Same OEM-quality parts, no dealership markup. Every order comes with free shipping, real expert support, and a 1-year warranty.
Learn more on our About Us page.
What payment methods do you accept?
We currently accept PayPal — a fast, secure way to pay online. Credit card payments (Visa, Mastercard, American Express) and Shopify Payments are being set up and will be available soon. We appreciate your patience.