Remanufactured 6.6L Duramax Long Block, 2001-2016 Chevy/GMC (LB7, LLY, LBZ, LMM, LML)
The 6.6L Duramax Long Block, Done Right.
A professionally remanufactured 6.6L Duramax long block for 2001-2016 Chevy/GMC trucks with the LB7, LLY, LBZ, LMM or LML engine. It's a dependable replacement built for stock horsepower.
Why Warren Diesel
- Professionally remanufactured and quality-controlled, with only the highest quality replacement parts
- Stronger LB7 pistons (Mahle/Clevite) with new rings
- Balanced crankshaft with keyways added so the gears can't spin
- ARP main bolts, rod bolts and head studs
- New main, rod and cam bearings and lifters
- Properly machined block and cylinder heads. Heads get new valve guides, seals and valve springs
- Complete valvetrain with chromoly pushrods
- Optional upgrades: O-ringed heads, high-rev valvetrain, ported and polished heads (call to order)
Ordering & Shipping
- Normal lead time is 7-10 days. Performance builds may take longer if a part isn't on hand.
- Freight: call 866-276-2511 for a freight quote. Freight orders ship once shipping charges are approved.
- Core: choose Send core first, or Send core after to add the core charge ($1,000 LB7/LLY, $1,200 LBZ/LMM, $2,200 LML).
- Warranty: a 12-month, unlimited-mile Repair & Replacement warranty is included at no charge (labor not covered). Nationwide parts & labor coverage for 12 or 24 months is available through North American Auto Care (NAAC).
NOTE: Please read our return core policy for acceptable core returns!!!
Click here for RETURN CORE SHEET
FAQ
Which engines does this fit?
LB7, LLY, LBZ (including early 2006 VIN code 2), LMM and LML 6.6L Duramax.
What warranty is included?
12 months, unlimited miles, Repair & Replacement at no charge (labor not covered). NAAC parts & labor upgrades for 12 or 24 months are available.
How long until it ships?
Normally 7-10 days. Performance builds may take longer.
Is there a core charge?
Yes. Choose Send core first, or Send core after to add the core charge ($1,000 LB7/LLY, $1,200 LBZ/LMM, $2,200 LML). Please review the core return sheet above.
How is shipping handled?
By freight with a custom quote. Call 866-276-2511.
Can I add performance upgrades?
Yes: O-ringed heads, high-rev valvetrain, and ported and polished heads. Call to order.