What vehicles came with the L33 engine?

The L33 5.3L engine was offered in select 2005–2007 Chevy Silverado and GMC Sierra 1500 models as a high-output variant.

Is the L33 engine good for LS swaps?

Yes. It’s one of the most desirable 5.3L LS swap engines thanks to its aluminum block, higher compression, and strong horsepower-per-liter output.

What are the main specs of the L33?

It features a 5.3L displacement, aluminum block, 9.9:1 compression, 310 HP , and cathedral-port heads.

What is the typical mileage on your L33 engines?

Most units fall between 70K–130K miles, fully inspected and tested before shipping.

Do accessories come with the L33 engine?

Engines usually come as a complete long block, with accessories depending on the specific stock unit.

Buy Best Used L33 Engine at Affordable Price

Name: Buy Best Used L33 Engine at Affordable Price
Brand: General Motors
SKU: GENE-L55898
Availability: InStock

The prices are exclusive of taxes and shipping. The price may vary depending upon the miles and year of manufacturing.

Additional Information

Brand	General Motors
Conditions	Remanufactured, Used
Miles	70000-130000
Year Compatibility	2014–2019
Verified	Tried & Tested
Warranty	Up to 3 Months

Features

Description

The L33 engine for sale is a unique aluminum 5.3L LS-based V8, producing up to 310 hp. Used from 2005–2007 in the Silverado, it weighs less than standard iron-block truck engines while keeping excellent towing strength. Enthusiasts often use the L33 in swap builds seeking a lightweight alternative to other used engines in our inventory. This platform supports common LS modifications and delivers dependable power for weekend projects or daily drivers.

L33 fitment requires confirming your specific application and model year. The L33 was used in limited 2002–2005 truck applications. Its aluminum block and Gen III architecture make it compatible with standard Gen III LS accessories and management systems. Our application review confirms the correct L33 before it ships.

GM truck and LS build enthusiasts comparing a used engine, a remanufactured engine, and an OEM engine for the L33 find that a clean used OEM unit is the best value — the factory aluminum block, the factory high-output heads, and the Gen III architecture all in an original OEM assembly. A used GM L33 engine from a verified low-mileage donor gives you the factory 310 hp 5.3L as an OEM engine at a price that no remanufactured engine from a standard LM7 core delivers at L33 specification.

Every used GM L33 engine ships with up to a 90-day warranty and arrives within 2 to 5 business days. Installation is not included. These are genuine GM OEM engines, and we stand behind every unit.

Specifications

Product Type	Engine
Displacement (Engine Size)	5.3L V8
Fuel Type	Gasoline
Availability	In Stock
Shipping	Nationwide Available
Use Case	Ideal for performance builds, swaps, and replacements

Frequently Asked Questions

What vehicles came with the L33 engine?
The L33 5.3L engine was offered in select 2005–2007 Chevy Silverado and GMC Sierra 1500 models as a high-output variant.
Is the L33 engine good for LS swaps?
Yes. It’s one of the most desirable 5.3L LS swap engines thanks to its aluminum block, higher compression, and strong horsepower-per-liter output.
What are the main specs of the L33?
It features a 5.3L displacement, aluminum block, 9.9:1 compression, 310 HP, and cathedral-port heads.
What is the typical mileage on your L33 engines?
Most units fall between 70K–130K miles, fully inspected and tested before shipping.
Do accessories come with the L33 engine?
Engines usually come as a complete long block, with accessories depending on the specific stock unit.

Review

Transparent, nationwide delivery — fast and secure.

Shipping Policy

Our shipping policy is flexible, as the shipping charges depend on the location. A few certain remote regions like CO, UT, NY, OR, & CA may have additional shipping charges or delivery fees. However, some circumstances may cause delays, but we always strive to deliver your order as quickly as possible.

Please note that all shipping times are estimates and not guaranteed. We examine all rebuilt and used engines before shipment and aim to provide high-quality used engines and transmissions. Shipping details and fees will be disclosed to consumers before any transactions are made. Our team is operational 24/7, and you can call us at +1-888-799-0188 to place an order.

L33 Engine