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Dinan Performance Engine Oil Cooler Kit for BMW 135i/135is 2011-2013 (E82/E88) – High-Capacity Direct-Fit Oil Radiator/Heat Exchanger Upgrade | BMW 1 Series N55 Bolt-On Track Day Cooling

Dinan Performance Engine Oil Cooler Kit for BMW 135i/135is 2011-2013 (E82/E88) – High-Capacity Direct-Fit Oil Radiator/Heat Exchanger Upgrade | BMW 1 Series N55 Bolt-On Track Day Cooling

£1,803.51
£1,803.51
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Heads-up on cancellations & returns: if you cancel an order or return an item, you won't get back 100% of what you paid. We apply a 10% restocking fee, the outbound shipping is non-refundable, and we have to pass on Shopify / PayPal payment processing fees; these aren't returned to us when we refund you. International orders also lose on exchange-rate spread in both directions. If the original packaging is damaged or missing, a reboxing charge applies. For international orders specifically, if you refuse to pay our shipping invoice or supply a prepaid label after placing the order, the same deductions apply. We're upfront about this — please be sure of your purchase before ordering.

Keep oil temps under control and protect your engine when you push on. This Dinan larger-capacity oil cooling package is a proven upgrade for the 2011 to 2013 BMW 135i and 135is in E82 coupe and E88 cabriolet form. It is a bolt-on, factory-location solution that delivers the kind of thermal stability you want for spirited road use and track days, especially on mapped cars where extra heat is generated.

The high-efficiency core offers roughly double the capacity of the OEM unit, so it rejects heat far more effectively and recovers quickly after hard pulls. A smart inlet scoop guides more air through the cooler and a freer flowing exit to the wheel arch helps purge hot air. The result is steadier oil temperature, better consistency lap after lap and greater confidence on summer drives.

  • Approximately 2x core capacity versus the factory heat exchanger for stronger thermal control
  • High-flow inlet scoop and enlarged exit path for improved airflow through the core
  • Installs in the original position with an OEM-style, clean finish
  • Lightweight convoluted PTFE-lined hoses with a tough polyester braid
  • Motorsport-grade fittings for durability and leak resistance

Compatibility

  • BMW 1 Series 135i and 135is
  • Chassis: E82 coupe and E88 convertible
  • Years: 2011, 2012, 2013

Why enthusiasts choose it

  • Ideal for fast road, track sessions and tuned builds that generate more heat
  • Helps maintain oil viscosity and pressure stability under sustained load
  • Premium Dinan engineering for efficient heat management and long service life
  • Neat, factory-style install with high quality lines and fittings

We have installed and used this kit at MJ Modifications and it delivers. Customers report noticeably lower oil temps, more consistent performance and a fit that looks factory while performing like a motorsport solution.

Professional installation

Want it fitted by specialists? Book installation with MJ Modifications in Warwickshire. Request a fitting quote at info@mjmodifications.co.uk.

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