Caterpillar G3516 Electromotor Cooler (Aftermarket, 1:1 OEM Equivalent, Non‑Genuine Original)

This electromotor cooler is engineered as direct drop‑in replacement for Caterpillar G3516 generator motor cooling circuit, widely used on G3516 / G3516B / G3516C / G3516E gas‑fired gen‑sets. No modification needed for field installation, same mounting footprint, port position, connection flange, core geometry and heat‑transfer capacity as OEM unit.

Condition: Brand new aftermarket

Fit: Caterpillar G3516 SR4B generator electromotor cooling

Installation: Direct drop‑in, no cutting, no adaptor required

Note: Not genuine Caterpillar OEM original part; fully interchangeable equivalent

Key Technical & Design Features

100% OEM‑matching parameters

Core size, tube count, fin density, flow area, working pressure rating exactly follow original drawing. Thermal performance validated under full‑load generator operating condition to avoid motor overheating on continuous base‑load running.

Material selection for gas gen‑set harsh condition

Stainless steel cooling tubes + anti‑corrosion fin structure, suitable for long‑run natural gas power plant, resist internal coolant corrosion and external dust fouling.

Pressure‑tested before shipment

Every unit goes through hydrostatic pressure test to eliminate leakage risk; match OEM working pressure for motor cooling loop.

Vibration‑resistant construction

Reinforced tube‑to‑header joint, anti‑fatigue design against genset vibration, common failure source on G3516 site operation.

Common failure symptoms requiring replacement

Generator stator / electromotor high temperature alarm under rated load

Internal micro‑leak, coolant mixing risk

Tube corrosion, blockage, fin collapse after thousands running hours

Original OEM unit long lead‑time & high cost

When replacing: check inlet/outlet gasket, renew gaskets during installation; perform full air bleeding after coolant refill to prevent air lock and hot‑spot inside motor cooling circuit.

Aftermarket vs Genuine Cat OEM