P4263 • GM 5.3L LS Remanufactured Engine

P4263 • GM 5.3L LS Remanufactured Engine
Fits Following Applications:
•Chevrolet Avalanche 2013-2010
•Chevrolet Silverado 1500 2013-2010
•Chevrolet Suburban 1500 2014-2010
•Chevrolet Tahoe 2014-2010
•GMC Sierra 1500 2013-2010
•GMC Yukon 2014-2010
•GMC Yukon XL 1500 2014-2010

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Quick Overview:

Tri Star GMC and Chevy 5.3 engines are 100% remanufactured, not rebuilt, in the U.S.A. and incorporate the latest updates. All GM 5.3 remanufactured engine assemblies are thoroughly simulation tested to verify oil pressure and compression meet our stringent specifications.

See below for more details.
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A core deposit is required for this product. Upon return all eligible cores will be refunded in full to your credit card or PayPal account. See our core policy for more information on what is an acceptable core.

Return shipping for cores is FREE.


Choose between our standard Limited Warranty included in the price, or upgrade to our "No Fault" Warranty Supplement for an additional charge.

Please note that the "No Fault" Warranty Supplement is only available on applications under our private use warranty. Vehicles used in commercial applications, over one ton, and/or diesel engine applications are not eligible for this upgrade. You can learn the limitations on coverage for each by clicking this link.


The Vehicle Identification Number, also known as VIN, is required for warranty tracking and to verify fitment of this part.

Your Vehicle Identification Number (VIN) can be found on the vehicle, insurance papers or vehicle registration.

If searching for the VIN on the vehicle the easiest way to view it is to stand outside the vehicle on the driver's side and look at the corner of the dashboard where it meets the windshield. If the VIN cannot be found there, open the driver's side door and look at the door post (where the door latches when it is closed).

All Vehicle Identification Numbers after 1980 are 17 digits long.

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Online Price: $3,878.00


All Tri Star LS series GM engines are remanufactured to the highest quality standards, and are built with the latest updates to ensure reliability.

This Longblock GMC and Chevy 5.3 engine includes block, crankshaft, connecting rods, pistons, timing set, oil pump, camshaft, lifters, bearings, gasket set, cylinder heads, valves and springs.

All Tri Star stock replacement engines are remanufactured with the highest quality control levels. All specifications meet or exceed standards set by OE and engine remanufacturing guidelines, and are thoroughly tested prior to packaging. Buying a Tri Star GM 5.3 remanufactured engine ensures long engine life for the best price.

Protect your investment
Every engine is different, and with today's rapidly changing automotive industry it is difficult to stay well informed on every update. Be sure to check out the Tech Article section under About Us. This area discusses both common failures with specific engines, as well as general information on how to install your engine properly and keep it running.


  • Graphite coated hypereutectic pistons resist scuffing and damage to heat much better than factory aluminum pistons
  • Fel-Pro® rear main seals protect against heat and leaks
  • Connecting rods are honed (both the little and big ends) to ensure uniformity, and bent rods are scrapped (some competitors will bend rods back into place)
  • Chrome plated valve stems resist scuffing and heat for greater durability
  • Soda blasting  aluminum components provides a visually 'like new' raw material without the risk of contaminating the engine (some competitors blast with other abrasive materials which can become stuck in the engine and cause the new engine to fail)
  • Every engine is 100% simulation tested very thoroughly by skilled technicians. Engines are checked for good compression, oil pressure, and black light checked for any leaks before packaging
  • Engines are provided with a written warranty which clearly outlines coverages. Unlike some competitors, Tri Star warranties are not 'pro-rated' which decrease your coverage over time
  • Engines are shipped in plastic totes with simple core return instructions provided to make returning cores extremely simple
  • Excellent product support technicians aren't just order takers, they are knowledgeable customer service experts
  • You're buying your remanufactured Engine direct from the manufacturer so you know you aren't dealing with a middle man for increased costs and headaches for warranty, core returns and technical assistance

Part Number
The stress relieved block is completely CNC machined in our state of the art CNC machining center. The block is fully align honed and torque plate honed, then assembled with brass frost plugs and pressure tested.
Short Block Features
Stock camshaft
Hypereutectic pistons
Timing set
Moly piston rings
Brass Frost Plugs
Surfaced and machined by trained professionals
3 angle valve job
Completely pressure tested
Additional Parts Included
Gasket set
Oil pump
Private use applications: 3 years, unlimited mileage parts and labor*
Commercial use applications: 18 month or 100,000 miles (whichever occurs first) parts and labor*

Labor time up to $50/hr. and only if originally installed at an automotive repair facility.
Warranties shown are a brief overview, please see link for more information: Click here for warranty overview
Please note, all information provided on this page is subject to change at any time and is not guaranteed for accuracy.

Part brands may change due to availability, but comparable parts will be used. Contact your sales representative to verify brands at time of sale.

Crude oil, gasoline, diesel fuel and other petroleum products can expose you to chemicals including toluene and benzene, which are known to the State of California to cause cancer and birth defects or other reproductive harm.

For more information go to www.p65warnings.ca.gov.