How long do LLY injectors last?

between 150,000 to 200,000 miles
Most well-maintained LLY injectors last between 150,000 to 200,000 miles.

Does LLY Duramax have EGR?

yes lly has the egr, but blocking it is no problem.

How much does it cost to replace injectors in a LLY Duramax?

The total cost for Duramax injector replacement is $2,000 and $6,000. The labor costs associated with this job can range from $800-$1,500. Related repairs could be needed if you have driven for a long time with dirty fuel injectors.

What does LLY stand for on Duramax?

LLY doesnt stand for anything specific, its just the RPO (regular production order) code that means “Duramax diesel engine”.

What’s the LLY code for a Duramax truck?

5 Essential LLY (2004.5 – 2005 Duramax) Upgrades! 5 Essential LLY (2004.5 – 2005 Duramax) Upgrades! LLY is the code used for Duramax motors used in 2004.5 and 2005 HD trucks. Although they introduced improvements from the 2001-2004 on the LB7 motor, there are a few essential upgrades every owner should consider.

What kind of manifold does LLY Duramax have?

From the factory, the LLY came with a highly restrictive turbo inlet manifold (also known as the turbo mouthpiece or air intake elbow), which in turn made the turbocharger work harder to build sufficient boost. Replacing the stock unit with S&B Filters ’ high-flow turbo inlet manifold solves most of the LLY’s overheating problems.

What’s the difference between the lly and LB7 Duramax?

The revised common-rail injectors eliminate what proved to be the Achilles Heel of the LB7 and the VVT turbo provides an improvement in drivability throughout the entire rpm range. However, as is the case with each generation Duramax, the LLY still has its quirks.

What are the upgrades to the Duramax 2004.5?

5 Essential LLY (2004.5 – 2005 Duramax) Upgrades! 1 Injectors outside of the heads provided much easier replacement 2 Improved injector design much more reliable than its predecessor 3 Variable Vane Turbo technology provides better spool up and wider power band 4 Largest frame turbo of any Duramax motor to date