FEATURED ENGINE: 5.3 AND 6.0 L GM LS ENGINES GEN III AND IV LS
The 'LS' line of engines from GM has been hugely popular since they were first unveiled, taking over for the famous small block line of engines. The Gen III and Gen IV versions of the LS engines were offered in many pick up, van, SUV and car applications and ranged from 4.8L to 7.0L sizes. The later model versions of this engine, like this 5.3L Chevy engine, feature Active Fuel Management (AFM) to increase fuel economy and decrease emissions.
Tri Star remanufactured 5.3 and 6.0 L GM LS engines are built to meet or exceed OEM standards and our backed by our standard 3 year, unlimited mileage nationwide warranty (private use applications). For total peace of mind you can also upgrade to our 'No Fault' Warranty Supplement, call for details. All Tri Star remanufactured engines incorporate the latest updates to correct original design flaws - Click here for the product bulletin outlining the updates of Tri Star remanufactured 5.3 and 6.0 L GM LS engines. Tri Star engines are remanufactured, not rebuilt, for the most reliable and durable engines available. Tri Star remanufactured 5.3 and 6.0 L GM LS engines are completely remanufactured including machining the block, crank, connecting rods and cylinder heads, and assembled with new or remanufactured parts. Rebuilt GM 5.3L and 6.0L LS engines will only correct the issue with the "core" engine used as raw material, but will typically not include any other machining or remanufacturing on the rest of the engine or have any updates performed. Used engines incorporate no updates and are extremely susceptible to failure due to mileage already being on the engine with questionable maintenance records. Used and rebuilt 5.3L and 6.0L LS engines are inferior, do not correct any of the original equipment design flaws and typically have very limited or pro-rated warranties. When shopping be sure to ask if you're getting a used, rebuilt 5.3L and 6.0L LS engine or a 100% remanufactured engine.
Be sure to use our online lookup or call our engine experts to ensure proper fitment for your application. Don't worry, the Vehicle Identification Number (VIN) from your vehicle is required at time of order as well. Our most popular LS engines are shown below, however this list is not all inclusive.
MOST POPULAR 5.3L ENGINES:
|Part # P4154|
|GMC||Yukon XL 1500||2005-2008|
|Part # P4227|
|Part # P4221 - aluminum block|
|GMC||Yukon XL 1500||2007-2009|
|Part # P4218 - cast iron block|
|Part # P4264 - aluminum block|
|GMC||Yukon XL 1500||2010-2014|
|Part # P4263 - cast iron block|
|GMC||Yukon XL 1500||2010-2014|
MOST POPULAR 6.0L ENGINES:
|Part # P4155|
|GMC||Sierra 1500 HD||2001-2006|
|GMC||Sierra 2500 HD||2001-2006|
|GMC||Yukon XL 1500||2001-2006|
|GMC||Yukon XL 2500||2001-2006|
|Part # P4184|
|GMC||Yukon XL 2500||2000|
|Part # P4228|
|Part # P4230|
|GMC||Sierra 2500 HD||2007-2010|
|GMC||Sierra 3500 HD||2007-2010|
|GMC||Yukon XL 2500||2007-2010|
|Part # P4265|
|GMC||Sierra 2500 HD||2011-2012|
|GMC||Sierra 3500 HD||2011-2012|
|GMC||Yukon XL 2500||2011-2012|
The 5.3L and 6.0L LS engines are notorious for having cracked cylinder heads, excessive oil consumption, and lifter noise (on Gen IV engines). Tri Star remanufactured 5.3L and 6.0L LS engines address these most common failure points in the remanufacturing process to provide the most durable and dependable engines.
|COMMON ISSUE:||TRI STAR SOLUTION:|
|Cracked cylinder heads (coolant leaks)||•Tri Star pressure tests the cylinder heads twice to ensure there are no cracks in the cylinder head. Cylinder heads are first pressure tested individually and then once more when assembled on the engine. Some competitors only pressure test the cylinder heads before assembly which can not show cracks which are only visible when the heads are torqued to the cylinder block.|
|Leaking timing cover and/or oil pan||•Tri Star includes the timing cover and oil pan installed on this engine. Timing covers are checked and machined for straightness to ensure a good seal. All engines are simulation tested and black light checked for leaks during testing.|
|Lifter noise (Gen IV)||•Tri star only uses the most recent design of the Active Fuel Management (AFM) lifters for the best oil flow to reduce lifter noise on startup|
|Premature bearing failure or engine knocking||•Blocks and cranks are completely remanufactured to exact tolerances utilizing CNC machining equipment
•Crankshafts are micro-polished to extend bearing life. Unlike some competitors, the tape used for micro-polishing cranks at Tri Star is only used once and in only one direction. Reusing tape back and forth can cause fine metal particles to become impregnated in the journal and cause premature failure.
•Tri Star LS long blocks include the oil pan and pickup tube installed to avoid contamination issues. Some competitors offer the engine without the pickup tube installed which risks it being exposed to dirt/debris that will plug the pickup screen.
|Low oil pressure||•Tri star designed cam bearings provide tighter oil tolerances than OE cam bearings. These are not an "off-the-shelf" part number for any bearing manufacturer and were created in collaboration with one of the high quality bearing vendors Tri Star works with.
•A brand new oil pump is used for the most reliable pressure and flow (some competitors rebuild or reuse old oil pumps)
|Oil consumption problems||•Tri Star installs an oil pressure relief valve baffle (OE part # 12639759) on all 2007 and later applications that did not have this included from the OE. This relief valve baffle redirects oil back to the oil pan.
•Compression height on the pistons is reduced to maintain factory compression ratio specifications.
•Both the block and cylinder heads are precision machined to exact specifications.
|Product Bulletin||"No Fault" Flyer||Product Line Flyer||Refer-A-Friend
(commercial accounts only)