Description:
PP-34415CN Westerbeke Transmission Cooler
This Seakamp Transmission Cooler is a marine-grade replacement designed for Westerbeke marine diesel generator sets and small marine diesel propulsion engines, most commonly fitted to the W-40 family.
The transmission cooler circulates gearbox oil through a tube-and-shell core where raw water absorbs heat, keeping marine gear oil within its specified operating range. Stable gear-oil temperature is critical for clutch-pack longevity, bearing protection and consistent shift engagement under continuous load.
Marine gear oil that overheats loses its load-carrying additives, leading to clutch slippage, premature bearing wear and seal failure. A correctly functioning transmission cooler preserves shift quality, protects the gearbox internals, and is especially important on high-torque diesel installations and prolonged trolling duty.
Manufactured to match OEM dimensions, port orientation and mounting geometry, the 34415CN is a true direct-fit replacement for the original Westerbeke component. It installs without modification to existing hoses, brackets or pipework, making it suitable for planned maintenance, corrosion replacement or preventative servicing. The copper-nickel (CuNi) tube bundle gives superior resistance to seawater corrosion and electrolytic attack compared to standard copper, extending service life in tropical or high-chloride water.
Suits Westerbeke:
• Westerbeke W-40
• Other Westerbeke transmission cooler applications using this Seakamp form factor
Replaces / Interchangeable With:
• Westerbeke: 34415CN
• 34415 (copper variant of same part)