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Description

BMW E46 M3 S54 (01-06) Mishimoto oil cooler kit silver

The Mishimoto oil cooler E46 is a complete oil cooler kit for the BMW E46 M3 with S54 engine from 2001 to 2006. With its individual throttle bodies and 8,000 rpm redline, the S54 often sees track time, and stable oil temperatures are key to a long engine life there.

According to Mishimoto this kit lowers oil temperatures by 16.7 °C. The core is 110 percent thicker than stock, pressure loss is 0.7 bar (10 psi) lower and oil capacity increases by about 0.4 litre. The kit is a complete bolt-on that fits without modification with the stock radiator and the Mishimoto E46 aluminium radiator.

Key benefits

• Direct fit for the BMW E46 M3 (2001-2006)
• Up to 16.7 °C lower oil temperatures
• 0.7 bar less pressure loss than the stock oil cooler
• One-piece billet end tanks, TIG-welded to the core
• Pre-made stainless steel braided oil lines with -10AN fittings
• CNC-machined 6061 aluminium -10AN fitting kit included
• Oil line stay prevents the lines from rubbing
• Mishimoto Lifetime Warranty

Suitable for

BMW E46 M3 with S54 engine

• Model years 2001 to 2006
• Engine: S54
• Fits with the stock radiator and the Mishimoto aluminium radiator for the E46 M3

Technical specifications

• Manufacturer: Mishimoto
• Part number: MMOC-E46-01
• Finish: natural CNC-machined (silver)
• Overall size: 663 x 109 x 86 mm
• Core size: 600 x 77 x 64 mm
• Connections: -10AN inlet and outlet
• Fitting kit bolt torque: 14 Nm
• Included: oil cooler with -10AN fittings, Mishimoto oil line fitting kit, stainless braided hose of approx. 51 cm (45° and 45° fittings), stainless braided hose of approx. 104 cm (45° and 90° fittings), black oil line stay, M6 x 1.0 x 16 mm button-head bolts

Installation and delivery

The kit replaces the stock oil cooler and hard lines with the Mishimoto oil cooler and stainless braided lines. Mishimoto rates the installation as medium. Flush the oil cooler with about one litre of clean oil before installation, tighten the fitting kit bolt to 14 Nm and check all connections before driving and regularly afterwards. The Mishimoto engineering report is available below. Lead time: 4 to 7 days.

Sixteen degrees cooler oil for the S54: the best insurance for an E46 M3 that sees the track.

Why choose this Mishimoto oil cooler E46?

On a high-revving S54 that spends a lot of time on track, oil temperature is one of the most important factors for engine life. This kit measurably lowers temperatures, fits without modification and comes complete with lines, fittings and stay. Mishimoto backs it with a lifetime warranty.

Frequently asked questions

How much cooler does the oil get?

According to Mishimoto’s testing, the Mishimoto oil cooler E46 lowers oil temperatures by 16.7 °C compared to the stock oil cooler.

Does the kit fit with my Mishimoto radiator?

Yes. The kit fits without modification with the stock radiator and the Mishimoto aluminium radiator for the E46 M3.

Is there anything to do before installation?

Mishimoto recommends flushing the oil cooler with about one litre of clean oil before installation to remove any debris from shipping.

What is the lead time?

The lead time is 4 to 7 days.

Downloads and documentation

Engineering report Mishimoto oil cooler E46 M3 (PDF, English)

Delivery outside the European Union: different shipping costs may apply. Don’t worry: we will email you as soon as possible after your order and agree the shipping with you. You are not committed to anything without your consent.