

HPI Oil Cooler Part — Ø65 O-Ring (HPOCP-OR65)
The HPI Oil Cooler Part — Ø65 O-Ring (HPOCP-OR65) — a service part for HPI’s modular oil cooler and oil-attachment system.
Brand: HPI
Product Name: HPI Oil Cooler Part — Ø65 O-Ring (HPOCP-OR65)
Family: HPI oil-cooler service parts
Code: HPOCP-OR65
Role: Replacement O-ring, adapter or centre bolt for an existing HPI oil-cooler kit
Buy against the part number on your existing HPI kit; the dimensions are specific to one position in the assembly.
HPI’s oil-cooler system is modular — sandwich adapters, union fittings, sensor take-offs — and these service parts cover the small components that fatigue first: O-rings, bolts and sensor adapters. Check the HPI parts diagram and buy against the exact code listed on your kit.
Features:
- Service Part: Covers an O-ring, union or small bolt in HPI’s oil-attachment family.
- Code-Keyed: The HPOCP code is the only reliable way to buy the right size.
- Compatible with Modular Kit: Fits the HPI oil-cooler and sandwich-adapter system.
- Install With Care: O-rings should be replaced every time the joint is opened.
- Japan-Made: Produced by HPI in-house, not a generic O-ring stand-in.
For keeping an existing HPI oil-cooler install in service.

