Mishimoto BMW E46 M3 Oil Cooler Kit
Part number: MMOC-E46-01
Protect your S54 and keep power consistent with the Mishimoto BMW E46 M3 Oil Cooler Kit. This is the proven E46 M3 oil cooler upgrade for fast-road and track use, delivering a real-world 30°F (16.7°C) reduction in oil temperature while improving flow and reliability. If you are searching for BMW E46 M3 oil cooler, E46 M3 S54 oil cooler kit, Mishimoto oil cooler UK or E46 track oil cooler, this is the direct-fit, bolt-on solution that works.
We have run this kit on our own builds and customer cars with excellent results. Owners consistently report lower oil temps, better consistency on hot laps and improved confidence on spirited drives. It fits with the stock radiator and requires no modifications to work with the Mishimoto BMW E46 Performance Aluminium Radiator.
Why choose this E46 M3 oil cooler upgrade
- Direct fit for 2001–2006 BMW E46 M3 S54
- Reduces oil temperatures by 30°F (16.7°C) for track-day and fast-road reliability
- 10 psi reduction in pressure loss compared to stock setup
- 110% increase in core thickness for serious heat rejection
- Increases oil capacity by 0.44 qt (0.42 L) for added thermal stability
- Bar-and-plate cooler with one-piece billet end tanks TIG-welded to the core for maximum strength
- Stainless steel braided oil lines with durable -10AN fittings for secure, leak-resistant connections
- Fully CNC-machined 6061 aluminium and 303 stainless steel E46 Oil Line Fitting Kit simplifies install
- Includes Oil Line Stay to prevent abrasion and keep routing tidy
- Fits with stock radiator and Mishimoto Performance Aluminium Radiator
- Natural CNC-machined finish
- Backed by the Mishimoto Lifetime Warranty
Track-proven cooling for the S54
The S54’s high-revving nature means oil temperatures can skyrocket on circuit, during motorway pulls or in summer traffic. This Mishimoto E46 M3 oil cooler kit is engineered for repeatable performance: a thick, efficient bar-and-plate core, robust billet end tanks and high-flow -10AN lines to keep oil temps under control and pressure stable. Ideal for E46 M3 cooling upgrade, Nürburgring trips, time attack, drifting and fast-road builds.
Compatibility
- Vehicle: BMW E46 M3
- Years: 2001–2006
- Engine: S54
- Chassis: E46
Specifications
- Cooler construction: Bar-and-plate
- Core thickness: 2.5 in
- Tank wall thickness: 0.16 in (4 mm)
- Increase in oil capacity: 0.44 qt (0.42 L)
- Temperature difference: 30°F (16.7°C)
- Overall size: 26.1 in x 3.4 in x 4.3 in
- Core size: 23.62 in x 3.02 in
- Inlet: -10AN
- Outlet: -10AN
- Installation torque spec: 10 ft-lb for Oil Line Fitting Kit bolt
What's included
- (1) Mishimoto Oil Cooler with -10AN fittings
- (1) Mishimoto BMW E46 Oil Line Fitting Kit
- (1) 1 ft 8 in stainless steel braided hose with 45° and 45° -10AN fittings
- (1) 3 ft 5 in stainless steel braided hose with 45° and 90° -10AN fittings
- (1) Mishimoto Oil Line Stay, black
- (2) M6 x 1.0 x 16 mm button-head bolts for installation with Mishimoto radiator
- Mishimoto Lifetime Warranty
Fitment and installation
Direct bolt-on for the E46 M3 with stock radiator or the Mishimoto BMW E46 Performance Aluminium Radiator. No cutting or fabrication required for either option. For professional fitting in the UK, Nforcd offers installation at our Warwickshire workshop. Request a quote: Sales@nforcd.com.
Compatibility check before dispatch
We verify compatibility before shipping. Provide your UK registration or the last 7 digits of your VIN at checkout so we can confirm the correct part for your E46 M3 S54.
Trusted by enthusiasts
Nforcd customers choose this Mishimoto E46 M3 oil cooler for dependable cooling on track days and road use. We have used it ourselves and continually see lower oil temps, stable oil pressure and superb build quality. It is the E46 M3 oil cooler kit we recommend for owners who want reliable performance and a true plug-and-play solution.
More information
Manufacturer: Mishimoto
Warranty: Mishimoto Lifetime Warranty
Notes
This oil cooler kit requires no modifications to work with the Mishimoto BMW E46 Performance Aluminium Radiator.
Video
BMW E46 M3 Oil Cooler Kit Features and Benefits
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