Mishimoto Performance Oil Cooler Kit - BMW M3 E46 S54 2001-2006

The Mishimoto Performance Oil Cooler Kit is a direct-fit upgrade for the S54-powered BMW E46 M3, developed for track use where oil temperature control is critical. Its efficient core delivers a proven 30F (16.7C) drop in oil temperature and adds 0.44 qt of oil capacity through a 110% increase in core thickness, with a 10 psi reduction in pressure loss. One-piece billet end tanks provide maximum reliability under hard driving.

Specifications

This part fits:

Shipping

• In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
• Standard, expedited, and overnight options at checkout.
• Oversized items ship by freight and take longer.
• Backordered items ship as soon as stock lands — contact us for lead times.
• International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.

Returns

• 30-day returns on new, uninstalled items in original packaging with all hardware.
• Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
• Installed or used parts can’t be returned — confirm fitment before you install.
• Special orders and custom items are final sale.
• Email us for return authorization before shipping anything back.

Full details: Shipping Policy · Refund Policy