LLY Duramax Parts
Parts for the LLY Duramax (2004.5 to 2005).
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Yukon Gear High Performance Gear Set For Dana 60 in a 4.88 Ratio
Yukon Gear & AxleOriginal price $816.00 - Original price $816.00Original price$816.00$816.00 - $816.00Current price $816.00| /Yukon Gear & Axle high performance ring & pinions set the standard for quality. Yukon Engineers use state-of-the art design & testing p...
View full detailsOriginal price $816.00 - Original price $816.00Original price$816.00$816.00 - $816.00Current price $816.00| / -
Yukon Gear High Performance Gear Set For Dana 60 in a 4.88 Ratio / Thick
Yukon Gear & AxleOriginal price $780.00 - Original price $780.00Original price$780.00$780.00 - $780.00Current price $780.00| /Yukon Gear & Axle high performance ring & pinions set the standard for quality. Yukon Engineers use state-of-the art design & testing p...
View full detailsOriginal price $780.00 - Original price $780.00Original price$780.00$780.00 - $780.00Current price $780.00| / -
Yukon Gear High Performance Gear Set For 10.5in GM 14 Bolt Truck in a 4.11 Ratio
Yukon Gear & AxleOriginal price $711.00 - Original price $711.00Original price$711.00$711.00 - $711.00Current price $711.00| /Yukon Gear & Axle high performance ring & pinions set the standard for quality. Yukon Engineers use state-of-the art design & testing p...
View full detailsOriginal price $711.00 - Original price $711.00Original price$711.00$711.00 - $711.00Current price $711.00| / -
Yukon Gear High Performance Gear Set For Dana 60 in a 4.56 Ratio / Thick
Yukon Gear & AxleOriginal price $780.00 - Original price $780.00Original price$780.00$780.00 - $780.00Current price $780.00| /Yukon Gear & Axle high performance ring & pinions set the standard for quality. Yukon Engineers use state-of-the art design & testing p...
View full detailsOriginal price $780.00 - Original price $780.00Original price$780.00$780.00 - $780.00Current price $780.00| / -
Yukon Gear High Performance Gear Set For 10.5in GM 14 Bolt Truck in a 3.73 Ratio
Yukon Gear & AxleOriginal price $724.00 - Original price $724.00Original price$724.00$724.00 - $724.00Current price $724.00| /Yukon Gear & Axle high performance ring & pinions set the standard for quality. Yukon Engineers use state-of-the art design & testing p...
View full detailsOriginal price $724.00 - Original price $724.00Original price$724.00$724.00 - $724.00Current price $724.00| / -
Yukon Gear High Performance Gear Set For 10.5in GM 14 Bolt Truck in a 4.56 Ratio
Yukon Gear & AxleOriginal price $858.00 - Original price $858.00Original price$858.00$858.00 - $858.00Current price $858.00| /Yukon Gear & Axle high performance ring & pinions set the standard for quality. Yukon Engineers use state-of-the art design & testing p...
View full detailsOriginal price $858.00 - Original price $858.00Original price$858.00$858.00 - $858.00Current price $858.00| / -
Yukon Gear Grizzly Locker For GM 10.5in 14T Differential 40 Spline 4.10-Down Ratio
Yukon Gear & AxleOriginal price $1,401.00 - Original price $1,401.00Original price$1,401.00$1,401.00 - $1,401.00Current price $1,401.00| /Everything about the Yukon Grizzly Locker is hardcore, its casing and gears, its advanced gear tooth design, and its impact on traction and perform...
View full detailsOriginal price $1,401.00 - Original price $1,401.00Original price$1,401.00$1,401.00 - $1,401.00Current price $1,401.00| / -
Yukon Gear High Performance Gear Set For 10.5in GM 14 Bolt Truck in a 3.42 Ratio
Yukon Gear & AxleOriginal price $858.00 - Original price $858.00Original price$858.00$858.00 - $858.00Current price $858.00| /Yukon Gear & Axle high performance ring & pinions set the standard for quality. Yukon Engineers use state-of-the art design & testing p...
View full detailsOriginal price $858.00 - Original price $858.00Original price$858.00$858.00 - $858.00Current price $858.00| / -
Yukon Gear Hardcore Diff Cover for 11.5in & 11.8in GM Dodge Ram
Yukon Gear & AxleOriginal price $415.00 - Original price $415.00Original price$415.00$415.00 - $415.00Current price $415.00| /Yukon Hardcore Diff Covers are constructed from thick-walled, high-strength nodular steel to protect lockers, gears and axles from the most extreme...
View full detailsOriginal price $415.00 - Original price $415.00Original price$415.00$415.00 - $415.00Current price $415.00| / -
Yukon Gear Hardcore Diff Cover for 14 Bolt GM Rear w/ 8mm Cover Bolts
Yukon Gear & AxleOriginal price $453.00 - Original price $453.00Original price$453.00$453.00 - $453.00Current price $453.00| /Yukon Hardcore Diff Covers are constructed from thick-walled, high-strength nodular steel to protect lockers, gears and axles from the most extreme...
View full detailsOriginal price $453.00 - Original price $453.00Original price$453.00$453.00 - $453.00Current price $453.00| / -
Yukon Gear Grizzly Locker For GM & Chrysler 11.5in w/ 30 Spline Axles
Yukon Gear & AxleOriginal price $2,646.00 - Original price $2,646.00Original price$2,646.00$2,646.00 - $2,646.00Current price $2,646.00| /Everything about the Yukon Grizzly Locker is hardcore, its casing and gears, its advanced gear tooth design, and its impact on traction and perform...
View full detailsOriginal price $2,646.00 - Original price $2,646.00Original price$2,646.00$2,646.00 - $2,646.00Current price $2,646.00| / -
Yukon Gear Grizzly Locker For GM & Chrysler 11.5in w/ 38 Spline Axles
Yukon Gear & AxleOriginal price $3,142.00 - Original price $3,142.00Original price$3,142.00$3,142.00 - $3,142.00Current price $3,142.00| /Everything about the Yukon Grizzly Locker is hardcore, its casing and gears, its advanced gear tooth design, and its impact on traction and perform...
View full detailsOriginal price $3,142.00 - Original price $3,142.00Original price$3,142.00$3,142.00 - $3,142.00Current price $3,142.00| / -
Yukon Gear Grizzly Locker For GM 10.5in 14 Bolt Truck w/ 30 Spline Axles
Yukon Gear & AxleOriginal price $1,305.00 - Original price $1,305.00Original price$1,305.00$1,305.00 - $1,305.00Current price $1,305.00| /Everything about the Yukon Grizzly Locker is hardcore, its casing and gears, its advanced gear tooth design, and its impact on traction and perform...
View full detailsOriginal price $1,305.00 - Original price $1,305.00Original price$1,305.00$1,305.00 - $1,305.00Current price $1,305.00| / -
Yukon Gear GM Side Gear Spacer Sleeve For GM 9.25in IFS
Yukon Gear & AxleOriginal price $62.00 - Original price $62.00Original price$62.00$62.00 - $62.00Current price $62.00| /Yukon Gear & Axle manufactures a full line of top quality small parts to complete any job including ring gear bolts, crush sleeves, pinion nuts...
View full detailsOriginal price $62.00 - Original price $62.00Original price$62.00$62.00 - $62.00Current price $62.00| / -
Yukon Gear GM 9.25 IFS Side Seal / 1998+
Yukon Gear & AxleOriginal price $49.00 - Original price $49.00Original price$49.00$49.00 - $49.00Current price $49.00| /Yukon Mighty Seals use the latest design and manufacturing technologies to produce a precision fit that seals tight and lasts for years to come.Ins...
View full detailsOriginal price $49.00 - Original price $49.00Original price$49.00$49.00 - $49.00Current price $49.00| / -
Yukon Gear Finned Aluminum Cover For Dodge & GM 11.5in
Yukon Gear & AxleOriginal price $608.00 - Original price $608.00Original price$608.00$608.00 - $608.00Current price $608.00| /These Yukon replacement diff covers take your rig a step beyond the boring factory look. They are the stock OE design made from aluminum and polish...
View full detailsOriginal price $608.00 - Original price $608.00Original price$608.00$608.00 - $608.00Current price $608.00| / -
Yukon Gear Eaton-Type 14 Plate Carbon Clutch Set For 9.5in GM and 9.75in Ford
Yukon Gear & AxleOriginal price $587.00 - Original price $587.00Original price$587.00$587.00 - $587.00Current price $587.00| /Yukon Gear & Axle spider gear kits feature higher quality materials and better manufacturing techniques than OEM to ensure a longer lasting spi...
View full detailsOriginal price $587.00 - Original price $587.00Original price$587.00$587.00 - $587.00Current price $587.00| / -
Yukon Gear Eaton-Type Positraction Carbon Clutch Kit w/ 14 Plates For GM 14T and 10.5in
Yukon Gear & AxleOriginal price $519.00 - Original price $519.00Original price$519.00$519.00 - $519.00Current price $519.00| /Yukon Gear & Axle clutch kits fit popular GM diffs outfitted with a Yukon Dura Grip positraction unit feature 14 advanced carbon clutch plates,...
View full detailsOriginal price $519.00 - Original price $519.00Original price$519.00$519.00 - $519.00Current price $519.00| / -
Yukon Gear Dura Grip For GM & Chrysler 11.5in / 30 Spline
Yukon Gear & AxleOriginal price $2,588.00 - Original price $2,588.00Original price$2,588.00$2,588.00 - $2,588.00Current price $2,588.00| /Yukon Dura Grip is a positraction limited slip differential that provides smooth yet aggressive traction, giving you the confidence and performance...
View full detailsOriginal price $2,588.00 - Original price $2,588.00Original price$2,588.00$2,588.00 - $2,588.00Current price $2,588.00| / -
Yukon Gear Eaton Positraction Shim Kit For 10.5in GM 14 Bolt Truck
Yukon Gear & AxleOriginal price $120.00 - Original price $120.00Original price$120.00$120.00 - $120.00Current price $120.00| /This Yukon Gear & Axle shim kit is designed for GM 14T differentials outfitted with an Eaton positraction unit.Installation InstructionsInstall...
View full detailsOriginal price $120.00 - Original price $120.00Original price$120.00$120.00 - $120.00Current price $120.00| / -
Yukon Gear Dura Grip Positraction For GM 9.5in w/ 33 Spline Axles
Yukon Gear & AxleOriginal price $1,543.00 - Original price $1,543.00Original price$1,543.00$1,543.00 - $1,543.00Current price $1,543.00| /Yukon Dura Grip is a positraction limited slip differential that provides smooth yet aggressive traction, giving you the confidence and performance...
View full detailsOriginal price $1,543.00 - Original price $1,543.00Original price$1,543.00$1,543.00 - $1,543.00Current price $1,543.00| / -
Yukon Gear Dura Grip Positraction For 10.5in GM 14 Bolt Truck / 4.10 & Down
Yukon Gear & AxleOriginal price $1,825.00 - Original price $1,825.00Original price$1,825.00$1,825.00 - $1,825.00Current price $1,825.00| /Yukon Dura Grip is a positraction limited slip differential that provides smooth yet aggressive traction, giving you the confidence and performance...
View full detailsOriginal price $1,825.00 - Original price $1,825.00Original price$1,825.00$1,825.00 - $1,825.00Current price $1,825.00| / -
Yukon Gear Crush Sleeve Eliminator Kit For GM 10.5in 14 Bolt Truck
Yukon Gear & AxleOriginal price $170.00 - Original price $170.00Original price$170.00$170.00 - $170.00Current price $170.00| /Crush sleeve eliminator kit for GM 10.5" 14 bolt truck. This kit contains a solid spacer & shim kit to eliminate the crush sleeve and set pinio...
View full detailsOriginal price $170.00 - Original price $170.00Original price$170.00$170.00 - $170.00Current price $170.00| / -
Yukon Gear Chrome Cover For 9.5in GM
Yukon Gear & AxleOriginal price $113.00 - Original price $113.00Original price$113.00$113.00 - $113.00Current price $113.00| /These Yukon replacement diff covers take your rig a step beyond the boring factory look. They are the stock OE design finished in chrome.Installati...
View full detailsOriginal price $113.00 - Original price $113.00Original price$113.00$113.00 - $113.00Current price $113.00| /
The LLY Duramax powered 2004.5 to 2005 Chevy Silverado HD and GMC Sierra HD trucks. It was the first Duramax with a variable geometry turbo and EGR, which helps it spool faster than the LB7.
Shop LLY Duramax Parts by Category
- Engine Parts
- Fuel System
- Fuel Injectors
- Intakes and Cooling
- Turbos and Exhaust
- Tuning
- Transmissions
- Suspension and Driveline
- Fluids
- Performance Packages
Not sure what fits? Send us your VIN or call 865.640.2097 and we will match the right part.
LLY Duramax FAQ
What is different about the LLY versus the LB7?
The LLY added a variable geometry turbo and EGR for faster spool and lower emissions.
Are LLY trucks known for overheating?
Some early LLY trucks ran hotter under load. Upgraded cooling parts are a common fix for trucks that tow heavy.