2009-2012 MERCEDES GL350 R320 (X164 W251) 3.0L OM642 DIESEL EMISSIONS DEF MODULE

What you see is exactly what you get

No stock photos, ever. Every listing shows the actual part that will ship to you — already pulled and cleaned — so you can confirm it's exactly what you need, in the condition you expect, before you buy. All backed by a free 90-day warranty and hassle-free returns.

Free 90-day warranty + hassle-free returns

Wrong part? Changed your mind? For eligible lower-48 + DC orders, returns are on us for ANY reason — hit the Contact Viking button for a prepaid label. Refunds are always cash to your payment method, never store credit.

Same-business-day shipping

We ship same business day if ordered before 11 AM Pacific — every part is already pulled, cleaned, and on the shelf, not buried in a car in the yard.

Free shipping (lower 48 + DC)

For eligible destinations, the checkout math stays calm: the listed direct price is the price that ships.

ASE-tested big stuff

Engines and transmissions are tested by our ASE Master Mechanic before listing.

DEF CONTROL MODULE

• ✓These photos show the exact individual part you'll receive — no stock photos
• ✓Genuine OEM — factory-original parts
• ✓Inspected before listing — engines & transmissions tested by an ASE Master Mechanic
• ✓FREE 90-day warranty & 90-day any-reason returns — we cover return shipping for eligible lower-48 + DC orders, freight included (details)
• ✓Order by 11 AM Pacific on a business day — ships that same day (holidays excluded)
• ✓Want longer coverage? Extended warranties to 180 or 365 days — see options

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