Browse our inventory of used OEM Buick parts sourced from US-based salvage facilities. Every component is a genuine factory-original part inspected for condition and listed with full vehicle compatibility details. Buick's extensive platform-sharing with Chevrolet, Pontiac, GMC, Cadillac, and Saturn means many Buick components cross-reference with a much larger GM donor pool — dramatically improving availability. Free shipping on all US orders.
Buick has shared GM platforms with other brands throughout its history — the LeSabre and Park Avenue shared the H-body with the Cadillac DeVille; the Rendezvous shared its front subframe with the Pontiac Aztek; the Enclave shared the GMT Lambda platform with the GMC Acadia, Chevrolet Traverse, and Saturn Outlook; and the LaCrosse and Allure shared the Epsilon platform with the Cadillac SRX on later generations. Understanding these cross-references is the most practical knowledge a Buick owner can have for used parts sourcing.
Buick Models & GM Platform Cross-Reference
| Buick Model |
Years |
GM Platform / Cross-References |
Parts in Stock |
| Buick LeSabre / Park Avenue |
1995–2005 |
GM H-body — Cadillac DeVille, Oldsmobile 88 |
Front subframe crossmember, rear subframe suspension cradle |
| Buick Rendezvous |
2002–2007 |
GM U-body — Pontiac Aztek |
Front suspension crossmember K-Frame (AWD and FWD variants) |
| Buick Enclave |
2007–2012 |
GM Lambda — GMC Acadia, Chevy Traverse, Saturn Outlook |
Transfer case assembly |
| Buick LaCrosse / Allure |
2005–2016 |
GM W-body / Epsilon — Cadillac SRX, Impala, Grand Prix |
Transfer case assembly, EPS rack and pinion, radio control panel |
| LeSabre / Park Ave / Cadillac DeVille |
2001–2005 |
GM H-body |
Front subframe crossmember (shared across all H-body applications) |
| Impala / Grand Prix / LaCrosse / Monte Carlo |
2005–2009 |
GM W-body |
Front subframe crossmember engine cradle |
Notes on Key Parts
Rendezvous Front Subframe — AWD vs. FWD
The Buick Rendezvous and Pontiac Aztek front suspension crossmember K-Frame is available in both AWD and FWD configurations — these are different assemblies and not interchangeable. Always confirm your drivetrain before ordering. Both variants cross-reference between the Rendezvous and Aztek.
Enclave / Acadia / Traverse / Outlook Transfer Case
The GMT Lambda transfer case fits all four nameplates — Buick Enclave, GMC Acadia, Chevrolet Traverse, and Saturn Outlook (2007–2012). The expanded combined donor pool from all four platforms makes this one of the most available transfer case units in our inventory.
LaCrosse EPS Rack and Pinion
The Buick LaCrosse electric power steering rack (belt-driven, opt GNA/NJ2) is a platform-specific unit. Always confirm your option codes before ordering — LaCrosse was available with both conventional hydraulic and electric power steering depending on trim and production year.
🔧 H-Body Cross-Reference — LeSabre, Park Avenue & Cadillac DeVille
The GM H-body platform was shared across the Buick LeSabre, Buick Park Avenue, Cadillac DeVille, and Oldsmobile 88/98. Front and rear subframes for these vehicles are cross-compatible within their respective production years — expanding your available donor pool significantly beyond Buick alone.
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