Cummins
Shop All
SKU #: GZ-GA47838
MPN #: GA47838
Grizzly Remanufactured Fuel Injector 04.5-05 GM 6.6L Duramax
Description
Overview
Restore fuel delivery, throttle response, and dependable diesel performance in your GM/Chevrolet 6.6L Duramax LLY with the Grizzly GA47838 Remanufactured Fuel Injector. Designed as a direct replacement high-pressure common rail injector, the GA47838 helps restore proper fuel atomization, smoother engine operation, improved drivability, and reliable towing and hauling performance for your Duramax-powered.
Each injector is professionally remanufactured to meet or exceed OEM specifications using high-quality internal components for consistent fuel delivery and long service life. Whether you are correcting rough idle, hard starting, excessive smoke, injector balance issues, poor fuel economy, or power loss, the Grizzly GA47838 is engineered to help bring your 6.6L Duramax LLY back to proper operating condition.
CORE CHARGE
What is a core deposit?
(opens in a new tab)
- Product Price
- $255.26
- Refundable Core Deposit
- + $75.00
- Price with Core Deposit
- $330.26
- Pay Core Deposit with your order
- Return Old Part within 30 days
- Get Deposit Back once approved
Enter your zip and we'll see if installation is available.
- Request quotes from local installers at checkout
- Compare options and choose the best fit for your install
About WrenchConnected
WrenchConnected is an independent installation marketplace operating in partnership with Diesel Power Products.
How it works
After checkout, we route your vehicle info and part SKU to verified installation shops near you. Local installers review the job and submit competitive bids; you pick the shop you want based on price, reviews, and availability. Your name and email stay private until you select an installer.
Pricing
You pay for the bid from your preferred shop. The full amount is shown before you confirm — installers cannot add charges without your written consent. Payments are processed securely by Stripe.
Your privacy
During bidding, shops see only your service ZIP code, vehicle year/make/model, and the part SKU — not your name, email, or address. Only the shop you select receives your contact details after payment. We never sell your personal information.
More detail at wrenchconnected.com.
The Grizzly GA47838 is a remanufactured high-pressure common rail fuel injector that restores fuel delivery, throttle response, and drivability, built to meet or exceed OEM specifications.
- Fits
- 2004.5-2005 GM 6.6L Duramax
- Brand
- Grizzly
- Best for
- Correcting rough idle, hard starting, excessive smoke, or power loss
- Key features
- Remanufactured high-pressure common rail fuel injector
- Restores fuel delivery, drivability, and engine performance
- Meets or exceeds OEM specifications
- Supports smooth idle and reliable engine operation
- Cost-effective alternative to a new replacement injector
- Designed for dependable long service life
- 12-month warranty included
Summarized by AI from this product’s description and specs. Confirm fitment for your year, make and engine before ordering.
FEATURES & BENEFITS:
- Remanufactured high-pressure common rail fuel injector
- Fits GM/Chevrolet 6.6L Duramax LLY applications
- Helps restore fuel delivery, drivability, and engine performance
- Built to meet or exceed OEM specifications
- Supports smooth idle and reliable engine operation
- Cost-effective alternative to a new replacement injector
- Designed for dependable long service life
- 12-month warranty included
APPLICATION:
- GM 2500HD/3500 6.6L Duramax LLY
About Grizzly Products
High quality emissions components are hard to come by. That's where Grizzly Products come in. Grizzly Products manufactures high quality diesel engine components for modern diesel engines that will not let you down. Grizzly's stringent recertification methods used in our remanufactured and new products, along with the use of high-quality replacement parts, make for an unbeatable and highly durable product line that helps support your service reputation.
Blog
October 05, 2026
White smoke from a diesel engine means different things depending on when it shows up, how long...
Read MoreWhat Causes White Smoke From a Diesel Engine?
August 31, 2026
If you're asking how long do Duramax injectors last, it depends on which generation you have, how...
Read MoreHow Long Do Duramax Injectors Last? Expert Guide
July 27, 2026
The 2006-2007 LBZ Duramax comes up in almost every conversation about the best Duramax trucks. GM built...
Read MoreLBZ Duramax: Why It's One of the Best Diesel Engines Ever Built
February 13, 2026
In this guide, we are going to break down every major Duramax generation, explain what changed, what...
Read MoreBest Duramax Engine: Top Generations Ranked
Overall rating: 0.0 / 5 from 0 reviews.
AI Generated Review Summary
Summary topics
Review topics: [].