Engines and Components› Engine Covers, Pans and Dress-Up Components

Goldenwrench

Custom Engine Cap Kit

$65.00

SKU: FXXCET

In Stock
In Stock
Ships by Sep 13
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Beginner — under 30 min

Overview

It provides an upgraded aesthetic to the factory plastic caps.
Show original supplier description
The Goldenwrench BLACKLINE Performance Coolant Expansion Tank Cap Cover offers a premium upgrade for the plain plastic factory caps found on many BMW M vehicles. This meticulously designed cover is CNC machined from T6 Aluminum and finished with an Anthracite Gray anodization, intended to complement the factory engine cover. This cap cover is specifically designed for BMW vehicles equipped with the N55, S55, S63, and S65 engines that utilize the larger coolant tank. Supported models include the E90/E91/E92 M3 LCI, F22 M235i, F87 M2/M2 Competition, F80 M3, F82 M4, and F10/F90 M5, among others. It is recommended to visually compare your existing coolant cap with the product photos to ensure compatibility. The installation is straightforward, as the billet cover affixes to the top of the factory cap and can be installed in minutes, including an installation instruction card with each kit.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandGoldenwrench
Part NumberFXXCET
CategoryEngines and Components

We’re here — turning wrenches, just like you.

Call us, follow along, or come say hi.

(760) 282-4645 Instagram Google

Buy with Confidence

Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy

Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

View Full Shipping Policy