25-87400A2 Aftermarket Mercruiser Power Trim Seal Kit | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket replacement Power Trim Cylinder Seal Kit - Replaces Part Number: 25-87400A2

New aftermarket seal kit replacing MerCruiser 25-87400A2 for R/MR, Alpha One, Alpha One Gen II and Bravo trim cylinders.

⚙️ Key Features

• Broad MerCruiser trim-cylinder seal coverage

• Fits Alpha One Gen I, Gen II and Bravo cylinder families

• Renews piston, rod, gland and port seals

• Use with replacement end cap 806191T where the gland is damaged

• One kit services one cylinder

🧰 Kit / Assembly Contents

• 1 × Rod-seal and wiper set - supplied under kit P/N 25-87400A2

• 1 × Piston seal set - supplied under kit P/N 25-87400A2

• 1 × O-ring and backup-ring package - supplied under kit P/N 25-87400A2

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 25-87400A2 (MerCruiser OEM seal-kit reference)

OEM / Related Numbers:

• 806191T

• 87400A2

Aftermarket / Verified Equivalents:

• Sierra: 18-2649

• GLM/Mallory power-trim seal-kit family

• Kacawa: WA25-87400A2

• Recmar: REC25-87400A2

🚤 Compatibility

Commonly used on:

• MerCruiser dual hydraulic trim-cylinder systems

Typically suits:

• Engine / Drive models:

• R, MR and Alpha One Gen I

• Alpha One Gen II

• Bravo I, Bravo II and Bravo III

• HP / Drive Range: Drive rating dependent

• System Type: MerCruiser trim-cylinder hydraulic system

• Year Range: Drive- and cylinder-number dependent

• Serial / Component Identification: Check the cylinder casting and end-cap design before disassembly.

🔌 Function

The seal kit renews the O-rings, rod seals, wipers and internal sealing components that prevent hydraulic fluid loss and pressure bypass in the matching trim or steering cylinder.

Common signs of failure / service requirement:

• Hydraulic fluid leaks around the piston rod

• Cylinder pressure bypass causes trim or steering drift

• Wiper seal no longer excludes water and debris

• O-rings are flattened, swollen or hardened

• System requires repeated bleeding after fluid loss

📦 Condition

• New aftermarket replacement part

• Brand new

• Supplied in original or equivalent packaging