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Heat Exchanger End Gasket 4 Inch for MerCruiser 4 Cyl 3.7L 65128 18 0389 27 99960
$26.39
Sale price
$26.39
Regular price
Available to Order
This Heat Exchanger End Gasket is a replacement gasket compatible with MerCruiser 4 Cyl 3.7L engines and matches OEM Part# 65128, 18-0389, 27-99960.
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I needed a forklift part and wasn’t sure which one fit. They asked for the model and serial number, got back to me quickly, and made sure I ordered the right one. Really helpful.
Randy W. — Verified customer
Product Overview
This heat exchanger end gasket is designed for the MerCruiser 4-cylinder 3.7L engine cooling system. It seals the end cover of the heat exchanger to prevent coolant leaks and maintain efficient engine temperature regulation. Ideal for boat owners and marine mechanics servicing MerCruiser 3.7L powerplants.
Key Features & Performance
- Precision-cut gasket material for a secure, leak-free seal
- Direct replacement for OEM part numbers 65128, 18-0389, and 27-99960
- Designed specifically for the MerCruiser 3.7L four-cylinder heat exchanger
- Resistant to heat, coolant, and marine environment conditions
- Easy installation with no modifications required
Fitment & Compatibility
- MerCruiser 4-cylinder 3.7L engines (including models such as 470, 485, 488, etc.)
- Compatible with heat exchanger assemblies using OEM gasket part numbers listed
Common Uses
- Replacing worn or leaking heat exchanger end gaskets on MerCruiser sterndrive engines
- Overhauling the cooling system during routine marine engine maintenance
- Ensuring proper sealing after heat exchanger cleaning or inspection
Technical Specifications
- Part Number(s): 65128, 18-0389, 27-99960
- Material: High-temperature gasket material
- Inner Diameter: 4 inches (approx.)
- Application: MerCruiser 4 Cyl 3.7L heat exchanger end
Frequently Asked Questions
Q: Is this gasket a direct replacement for the original MerCruiser part? A: Yes, this gasket matches OEM part numbers 65128, 18-0389, and 27-99960 and is designed to fit the MerCruiser 3.7L heat exchanger end cover.
Q: What material is the gasket made from? A: The gasket is constructed from a high-temperature, coolant-resistant material suitable for marine cooling systems.
Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.