Engines and Components Oiling Systems

Mercedes-Benz

Bluetec Diesel Engine Oil Filter Kit

$7.95

SKU: MB6421800009

In Stock
In Stock
Ships by Sep 9
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Beginner — under 30 min

Overview

The Mercedes-Benz oil filter kit, part number MB6421800009, is a replacement oil filter designed for Bluetec diesel engines. This kit includes the Mann-Filter HU 821 X oil filter, which is engineered to provide effective filtration for your diesel engine. It is a direct replacement part intended to maintain optimal engine health and performance by removing contaminants from the oil.
Show original supplier description
The Mercedes-Benz oil filter kit, featuring the Mann-Filter HU 821 X (part number MB6421800009), is specifically designed for Bluetec diesel engines. This kit provides essential filtration to keep your engine running smoothly and efficiently. Engineered by Mann-Filter, a reputable brand in filtration technology, the HU 821 X oil filter is built to meet or exceed OEM specifications. It effectively captures impurities such as soot, metal shavings, and combustion byproducts from the engine oil, preventing them from circulating and causing wear on critical engine components. Regular replacement of your oil filter is crucial for maintaining engine longevity. This kit ensures you have the correct part for your Bluetec diesel engine, helping to preserve its performance and reliability. By using this filter, you contribute to a cleaner engine environment and reduce the risk of premature component failure.

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

BrandMercedes-Benz
Part NumberMB6421800009
CategoryEngines and Components

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

Call us, follow along, or come say hi.

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