Mosselman BMW E82 E88 Single to Twin Oil Cooler Kit Extension - BMW 135i and BMW 1M - Setrab 19-row - N54 N55 - Part Number OCE8X.N5X.3
Upgrade your BMW 1 Series oil cooling with the Mosselman Single to Twin Oil Cooler Kit Extension for E8x. This is the go-to BMW 135i oil cooler upgrade and BMW 1M oil cooler upgrade for owners who want reliable oil temperature control on fast road and track days, especially in warm climates. Built around a proven Setrab 19-row oil cooler and Mosselman hardware, this twin oil cooler extension converts your existing single cooler setup to a robust twin cooler layout for improved heat management on N54 and N55 engines.
If you are searching for BMW E82 oil cooler, BMW E88 oil cooler, BMW 135i oil cooler kit, BMW 1M twin oil cooler, BMW N54 oil cooler upgrade, or BMW N55 oil cooler upgrade, this Mosselman Twin Oil Cooler Extension Kit E8x is exactly what you need. It is engineered to increase oil cooling capacity and stabilise oil temps under sustained load, high ambient temperatures and hard track use.
Why choose this Mosselman twin oil cooler extension
- Serious cooling for N54 and N55 engines on BMW E82 E88 135i and BMW E82 1M
- Setrab 19-row oil cooler for high efficiency and durability
- Ideal for track days, spirited driving and warm climate use
- Upgrades an existing single cooler to a twin cooler system for greater capacity
- Quality Mosselman brackets and hose kit for a secure, reliable install
We have run this Mosselman twin oil cooler extension on our own cars and customer builds. Feedback has been excellent, with consistent oil temperatures and confidence on long sessions and hot days. It is a proven BMW 135i oil cooler upgrade and BMW 1M oil cooler solution for anyone pushing their E8x hard.
What is included
- 1x Setrab 19-row oil cooler
- 1x Pre-assembled stainless steel bracket for the left side
- 1x Complete mounting bracket for the left cooler
- 1x Hose kit
Vehicle compatibility
- BMW 1 Series 135i E82 E88 N54
- BMW 1 Series 135i E82 E88 N55
- BMW 1 Series 1M E82 N54
Search terms covered: BMW E82 oil cooler kit, BMW E88 oil cooler kit, BMW 135i oil cooler upgrade, BMW 1M oil cooler kit, BMW N54 twin oil cooler, BMW N55 twin oil cooler, E8x oil cooler extension.
Fitting and important notes
This is not plug-and-play. Some modifications to the car are required to fit the larger oil cooler and bracket.
Additional OEM parts required for installation:
- Oil cooler front air duct - left
- Wheel arch air duct - left
- Inside wheel arch for the auxiliary cooler - left
BMW 1M specific note: The 1M is equipped with an auxiliary water cooler on the left side, which is the location for the second oil cooler. To install the twin setup, the auxiliary water cooler must be removed and a larger radiator may be required. Allow additional labour time for 1M fitment.
Professional fitting available
Want it fitted correctly the first time? Book professional installation with Nforcd in Warwickshire. Request a fitting quote at Sales@nforcd.com.
Compatibility check before dispatch
We verify compatibility before shipping. Provide your UK registration number or the last 7 digits of your VIN at checkout so we can ensure this Mosselman twin oil cooler extension suits your BMW 135i or BMW 1M.
Manufacturer and part number
Manufactured by: Mosselman
Part number: OCE8X.N5X.3
Ideal for warm climate and track use
The twin cooler setup is strongly recommended for cars driven in hot weather and for dedicated track day builds. It is a highly effective BMW oil cooler upgrade for E82 E88 135i and E82 1M owners who demand dependable performance and consistent oil temperatures.