Out of stock
SKU: HKR12657HKR
UPC: 090127733110
MPN: 12657HKR
The HOOKER GM A-Body Crossmember Spacer for 4L60 transmissions is a precision-engineered transmission adapter designed to resolve fitment challenges when installing modern LS-series engines into classic GM A-Body vehicles from 1969–1972. This aluminum spacer eliminates clearance conflicts between the transmission and factory crossmember, enabling seamless engine swaps without extensive frame modifications or welding.
Constructed from aluminum and finished in natural (unpainted) form, the spacer weighs 0.71 lbs and measures 5.15 x 5.15 x 8.75 inches, making it compact enough to fit within standard engine bay constraints. The natural aluminum finish allows for custom painting to match your restoration color scheme, or can be left bare for a minimalist appearance. This adapter specifically accommodates the 4L60 four-speed automatic transmission, one of the most popular overdrive units paired with LS engine swaps in classic muscle cars and street rods.
Restorers and engine swap enthusiasts tackling LS engine conversions in 1969–1972 Chevrolet Chevelle, Buick GSX, Oldsmobile 442, and Pontiac GTO models will find this spacer essential for achieving a proper fit without fabricating custom solutions. Rather than grinding, cutting, or modifying your original crossmember, this purpose-built adapter preserves factory components while modernizing the powertrain. It pairs directly with HOOKER's transmission mounting systems and LS-swap staging kits, streamlining the installation process for weekend builders and professional shops alike.
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