Products Showing Parts for — {{ }}

No Results Showing Parts for — {{ }}
USD 31.55
Part #: GRVB-384G

Grand Rock VB-384G V-Band Clamp (Downpipe To Front-Pipe)

2001-2007 GM 6.6L Duramax LB7/LLY/LBZ
Part #: GRVB-384G
★★★★★ ★★★★★ 2 Reviews
Buy now, pay later using Affirm Logo during checkout.
Our Recommendations Compatible Products
Scroll to View More


The Grand Rock V-Band Clamp VB-384G is a replacement for the factory clamp your 2001-2007 GM 6.6L Duramax. This clamp joins the bottom of your downpipe, to the front-pipe in your exhaust system. The factory clamp is exposed to extreme conditions from constant heat cycles, and being exposed to the elements that can often lead to damage or corrosion. This high-quality replacement costs much less than a new clamp at the dealer, and will save you a lot of time and hassle when installing a new exhaust system, or downpipe. 

  • High-Quality Replacement 
  • Joins Bottom Of Turbo Downpipe To Exhaust Front Pipe
Replaces GM OE#: 15671559

Vehicle Applications

2001 Chevy 6.6L LB7 Duramax
2002 Chevy 6.6L LB7 Duramax
2003 Chevy 6.6L LB7 Duramax
2004 Chevy 6.6L LB7 Duramax
2004.5 Chevy 6.6L LLY Duramax
2005 Chevy 6.6L LLY Duramax
2006 Chevy 6.6L LLY/LBZ Duramax
2007 Chevy 6.6L LLY/LBZ Duramax
2001 GMC 6.6L LB7 Duramax
2002 GMC 6.6L LB7 Duramax
2003 GMC 6.6L LB7 Duramax
2004 GMC 6.6L LB7 Duramax
2004.5 GMC 6.6L LLY Duramax
2005 GMC 6.6L LLY Duramax
2006 GMC 6.6L LLY/LBZ Duramax
2007 GMC 6.6L LLY/LBZ Duramax


  • MFG. Number VB-384G
  • Manufacturer Name Grand Rock Exhaust
  • Shipping Weight 1.00 lb.
  • Shipping Length 6 in.
  • Shipping Width 6 in.
  • Shipping Height 1 in.
  • Fuel Type Diesel
  • Prop 65 Prop 65 WarningWARNING: Cancer & Reproductive Harm -
  • Internal L0R60.00


★★★★★ ★★★★★
3.5/5 Stars out of 2 Reviews
Band Clamp
Quality is decent enough and gets the job done, though I would not recommend. I installed the clamp and tightened down the nut, but when I went to loosen the nut it started binding. I'm afraid if I continue it will shear the t-bolt or strip the nut/threads. For now it stays on until I receive my replacement Genuine GM clamp. Also, the picture shows a captured t-bolt, the one I received is not captured. It had a tendency to fall out when installing which made install very tedious. In addition, because the t-bolt is not captured there is a lack of support from what would normally retain the t-bolt; the "hooks" it pulls against on mine started to warp when I was snugging it up.
Band clamp
Excellent product very well made. Would recommend this product

Write a Review

Include Your Order Number For a Chance to Win a $100 Gift card

Overall Rating

Your Information

Email Address will not be made public.

Questions and Answers

Is this the same V Band for downpipe to turbo outlet? Can you use this V band to connect the down pipe from Turbo outlet?
View Staff Answer 

The GRAND ROCK VB-384G V-BAND CLAMP is used to connect the downpipe to the front pipe on a 2001-2007 GM 6.6L Duramax.

If you are interested in the clamp that joins the downpipe to the turbo on a 2004.5-2015 Duramax here are a few options we offer:

Ask a question about this product

Please allow up to 1 business day for reply.

More to Consider

Recently Viewed