SKU: WCF100024

Valley CP3 Block Off Plate

Ships From Manufacturer in 3-5 Days
Confirmed fitment below
YEARS
2001-2016
MAKE / MODEL
GM/Chevrolet/GMC / Silverado/Sierra
SERIES
2500HD/3500HD
ENGINE
6.6L Duramax LB7/6.6L Duramax LBZ/6.6L Duramax LLY/6.6L Duramax LML/6.6L Duramax LMM
Price
$72.75
or
American Express
Apple Pay
Diners Club
Discover
Google Pay
Mastercard
PayPal
Shop Pay
Visa
Free Shipping
ORDERS $70+
Easy Returns
HASSLE-FREE
Earn Rewards
ALLIGATOR POINTS
Not sure this fits your build?
Our diesel experts know these trucks. Call or chat before you buy.
1-208-719-7400

PRODUCT DETAIL

Key Features & Description

Features:

  • Blocks off factory valley CP3 location
  • Precision-machined from billet aluminum
  • Black anodized for corrosion resistance
  • Includes O-ring for a tight seal
  • Engraved Wehrli logo adds a clean look
  • Perfect for dual fueler or CP3 delete
  • Durable and leak-resistant construction
  • Simple install with factory hardware

Wehrli Block off Plate for GM 6.6L Duramax

If you're upgrading the fuel system on your 6.6L Duramax and planning to remove the factory CP3 from the engine valley, there’s one small but essential piece you don’t want to overlook—the block-off plate. The Wehrli 100024 Valley CP3 Block Off Plate is designed to cleanly and securely seal off the original CP3 location once it's been removed, whether you're running a dual fueler setup or a full CP3 delete. It's a simple component, but it plays a key role in maintaining reliability and a clean engine bay. This plate is machined from high-quality billet aluminum, giving it the strength and precision fit you’d expect from a Wehrli product. It features a durable black anodized finish that resists corrosion and looks right at home in a well-built engine bay. An engraved Wehrli logo adds a nice finishing touch without being over the top. It also includes a high-quality O-ring to ensure a leak-free seal, so once it’s installed, you won’t have to give it a second thought.

Fits: 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

FITMENT GUIDE

Exact Fitment — Verify Your Year

Year RangesYears
Make
Model
Series
Engine
2001-2016
GM/Chevrolet/GMC
Silverado/Sierra
2500HD/3500HD
6.6L Duramax LB7/6.6L Duramax LBZ/6.6L Duramax LLY/6.6L Duramax LML/6.6L Duramax LMM

CUSTOMER REVIEWS

What Buyers Say

Call a Diesel Expert, we'll find the right fit for your build

Not sure this part is right for your truck? Our team knows these platforms inside out. No hold music, no scripts.

Chat with Us