2006 GMC Envoy 4.2L I6 Engine – Vortec 4200 LL8

Description

Restore the performance of your SUV with this 2006 GMC Envoy 4.2L Inline-6 engine (Vortec 4200 LL8). Known for its balance of power and efficiency, the LL8 is a durable engine designed for long life and dependable operation.

This is a complete OEM used engine, carefully removed from a donor vehicle. Each unit is compression-tested, inspected, and verified to meet factory performance standards. With 90,000–120,000 miles, this motor is an excellent low-mileage replacement for your Envoy or other GM SUV.

Performance & Reliability

Engine Code: LL8 Vortec 4200

Displacement: 4.2 liters

Configuration: Inline-6, DOHC, 24-valve

Horsepower: ~291 hp @ 6,000 rpm

Torque: ~277 lb-ft @ 3,600 rpm

Mileage: 90k–120k miles

Tested for compression, leaks, and oil pressure

The Vortec 4200 is widely praised for smooth operation, strong torque delivery, and long-lasting reliability. It was one of GM’s most advanced inline engines, making it an excellent choice for replacement.

Fitment

Direct fit replacement for:

2002–2009 GMC Envoy 4.2L I6 (VIN S, engine code LL8)

2002–2009 Chevrolet Trailblazer 4.2L I6

2004–2007 Buick Rainier 4.2L I6

2005–2009 Saab 9-7X 4.2L I6

2003–2008 Isuzu Ascender 4.2L I6

Note: Will not fit 5.3L V8 models. Always confirm compatibility using VIN and RPO code LL8 before purchase.

Warranty & Installation

This engine comes with a 6-month warranty covering internal components. Professional installation is recommended, with replacement of gaskets, seals, fluids, and belts to ensure optimal performance.

Why Choose This Engine?

Genuine OEM GM 4.2L LL8

Tested and low mileage for long service life

Direct fit for multiple GM SUVs (Envoy, Trailblazer, Saab, Isuzu, Buick)

Strong power and proven reliability

Warranty included for confidence