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Moon Auto Parts stocks a complete range of used Buick engines for sale, covering every major model in the Buick lineup: Enclave, LaCrosse, Encore, Verano, Regal, Lucerne, Rendezvous, and Envision. As a premium GM brand, Buick shares powertrain architecture with Chevrolet and Cadillac, which gives our inventory exceptional depth across all engine options and production years. Every used Buick engine in our catalog is sourced from verified low-mileage donor vehicles and compression-tested by certified technicians.
Buick's US engine lineup centers on two primary families that cover the vast majority of replacement demand.
The 3.6L V6 is the most widely fitted engine across the Buick lineup, appearing in the Enclave, LaCrosse, Regal GS, and Envision in LFX and LGX variants. The LFX produces 304 horsepower and is used through 2015, while the refined LGX, introduced in 2016, produces 310 horsepower with improved valve timing and reduced internal friction. A used Buick Enclave engine or a used Buick LaCrosse engine from our inventory covers both LFX and LGX variants depending on the model year. The 3.6L Buick 3.6L engine for sale from a low-mileage donor delivers genuine OEM performance at a fraction of new unit pricing, which typically runs $3,500 to $6,000 at a GM dealer.
The 2.4L LE9 naturally aspirated inline-four powers the base LaCrosse and Regal, producing 182 horsepower. It is one of GM's most proven four-cylinder platforms, straightforward in design, widely available as a low-mileage used unit, and inexpensive to install compared to V6 applications.
1.4L Ecotec Turbocharged - LUJ and LUV
The 1.4L turbocharged Ecotec, in LUJ and LUV variants, powers the Encore and Verano, producing 138 to 153 horsepower depending on application year. A Buick Encore engine from our inventory covers all model years from 2013 onward with documented low mileage. These compact turbocharged units benefit significantly from donor vehicles with mileage under 70,000 miles. Our sourcing team specifically targets this threshold for Encore and Verano requests.
Buick engine replacement requires accurate specification matching. The 3.6L LFX and LGX are not interchangeable despite sharing the same displacement, and the 1.4T LUJ and LUV variants differ in turbocharger and intercooler configuration. When you buy a used Buick engine online from Moon Auto Parts, our team cross-references your full VIN to confirm the correct engine code LFX, LGX, LE9, LUJ, or LUV and verifies transmission compatibility before every shipment.
Every low-mileage Buick engine in our inventory is mileage-documented from donor vehicle records, not estimated. Every Buick engine with warranty includes our full 4-year / 40,000-mile coverage at no extra charge. No core charge, no hidden delivery fees, and free shipping to commercial addresses.
