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FSD26 IS LIVE: Every $1 spent = 150 entries to win a 2024 F-350 Limited + $20,000 cash.
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Wehrli

Wehrli 2001+ GM Duramax LB7/LLY/LBZ/LMM/LML/L5P Billet Oil Fill Cap - Black Anodized

4.7 store rating · 572 reviews
SKU: WCFWCF100443

Fits 2006–2015 Cadillac CTS, 2002–2013 Cadillac Escalade and more · Duramax

All 240 applications
$55.99
Only 6 left. Ships in 1–2 business days.
8250 Entries150X
This purchase enters you to win FSD26, a 2024 F-350 Limited and $20,000 cash. See the truck · No purchase necessary
  • Authorized dealerGenuine Wehrli parts, sourced direct
  • 30-day returnsSee the return policy
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Clean up the engine bay of your 2001-2025 Chevy Silverado or GMC Sierra 2500 / 3500 6.6L truck equipped with the 6.6L Duramax with this Billet Aluminum Black Anodized Oil Fill Cap from WCFab. This is a complete cap, not a cover. Direct OEM replacement for the factory plastic part. Includes o-ring seal and machined cam lock engagement. CNC machined in the USA. - - Direct replacement for the following GM OEM model numbers: 97350955, 97216410, 12573341, 12677347 - - Also compatible with 2.8L LWN Duramax and the following GM LS gasoline engines: - - LSX - 4.8L V8 - LR4, LY2, L20 - 5.3L V8 - LC9, LH6, LH8, LH9, LMF, LM4, LM7, LY5, LMG, LS4, L33, L59 - 5.7L V8 - LS1, LS6 - 6.0L V8 - LQ4, LQ9, LS2, L76, L98, L77, LY6, L96, LFA, LZ1 - 6.2L V8 - LS3, LS9, LSA, L92, L99 - 7.0L V8 - LS7

  • Matches WCFab Billet Aluminum Coolant Tank and Brake Reservoir Caps
  • CNC Machined Billet Cap is a direct OEM Replacement not a cover.
  • Engraved Wehrli Custom logo on bottom of part
  • Black Anodized Finish
  • Includes o-ring seal
  • Installs in seconds
  • Machined cam lock
  • Made in USA

Reviews

What customers say

Verified reviews collected by Loox from real orders.

Good to know

Questions, answered straight.

If it is not here, call or text the counter. Real people, real answers.

Fitment

  • Will this fit my truck?

    The Fits section at the top of the page lists the manufacturer's applications for this exact part. If your year, make and model is not there, or you are not sure, text us a photo of what you are replacing with your year and engine and we will confirm it before you order.

  • What if I order the wrong part?

    Call or text us before it ships and we will swap it. After delivery you have 30 days to return it in new, uninstalled condition. The return policy has the restocking details.

Shipping

  • When will it ship?

    In-stock parts usually ship within 1 to 2 business days from warehouses across the USA. The stock line under the options tells you the status of the part you are looking at. Large items ship LTL freight and we call to schedule delivery.

  • Why did I only get part of my order?

    We ship from multiple warehouses, so an order with several items can arrive in more than one box. Tracking for each shipment is emailed as it goes out. Full details in the shipping policy.

Returns and warranty

  • What is the return policy?

    30 days from delivery, in new and uninstalled condition, with a restocking fee. Everything is spelled out in the Returns & Refund Policy.

  • How do warranty claims work?

    We are an authorized dealer, so the manufacturer's warranty applies to every part we sell. Call or text us with your order number and we handle the claim with the brand for you.

Paying

  • Can I pay over time?

    Yes. Shop Pay installments are offered at checkout on qualifying orders, and the monthly estimate shows right under the price.

  • What is a core deposit?

    Some remanufactured parts, like injectors and turbos, carry a refundable core deposit. It is shown on the product page when it applies and refunded when your old part comes back to us.

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Why buy here

A diesel shop that sells parts, not a website that sells boxes.

Every part on this site is one our own techs can stand behind.

  • We run what we sell

    A working diesel repair and fabrication shop in Nazareth, PA. These are the parts our techs install every week.

  • Real techs on the phone

    Call or text 908-223-9744 and you get a diesel tech, not a script.

  • Authorized dealer

    Genuine parts straight from the manufacturer, with the factory warranty behind them.

  • Fast from stock

    Most in-stock parts ship in 1 to 2 business days from warehouses across the USA.

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  • 7+ Years in business
  • 6+ Shop technicians
  • 30,000+ In-stock SKUs
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FSD shop interior - trucks on lifts The shop floor, Nazareth, PA

Full Send Diesel, Nazareth, PA

A team of diesel people, not a call center.

Full Send Diesel is a shop full of techs, builders and parts people in Nazareth, Pennsylvania. When you call or text, you reach someone who works on these trucks and knows the parts.

Not sure what you need? Send a photo of what you are replacing with your year and engine. We will point you to the right part, confirm it is in stock, and get it moving.

Call 908-223-9744 Text us Email

Mon–Fri, 8am–4pm ET. After hours, text or email and we answer first thing in the morning.

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