1981 GMC Chassis Components

Transmission Crossmembers, Steel, Black Powdercoated, Chevy, GMC, Each

Part Number: SUM-770282

4.91 out of 5 stars ( 22 )

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Crossmember, Transmission, Steel, Black, GM, 700R4/T-5/4L60, Each

Part Number: SUM-770301

4.67 out of 5 stars ( 48 )

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Crossmember, Transmission, Steel, Black, GM, TH400, Includes SUM-770307, Each

Part Number: SUM-770303

4.84 out of 5 stars ( 19 )

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Crossmember, Transmission, Steel, Black, GM, G-Body, 4L80E, Each

Part Number: SUM-770324

4.58 out of 5 stars ( 12 )

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Transmission Crossmember, Steel, Red PowderCoated, GM G-Body, Each

Part Number: UPI-3108-R

5.0 out of 5 stars ( 1 )

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Transmission Crossmember, Steel, Black PowderCoated, GM G-Body, Each

Part Number: UPI-3108-B

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Wheel Tubs, Steel, EDP Finish, 43.00 in. Length, Wheel Tub Is 4 in. Wider Than Stock, Chevrolet, GMC, Each

Part Number: KPT-0850-326

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Transmission Crossmember, Steel, Black Powdercoated, 73-87 Chevy, GMC, C-10, TH350, TH400, Powerglide, 700R4, Each

Part Number: SUM-770581-R1

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Today

Transmission Crossmember, GM Gen III/IV, Gen V Swap, Blackheart, Steel, Black Powdercoat, Chevrolet, GMC, Each

Part Number: HOK-BHS548

5.0 out of 5 stars ( 1 )

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Chassis Stiffeners, Frame Rail to Crossmember Braces, Front, Steel, Black Powdercoated, Chevy, GMC, Pair

Part Number: ART-11369550

3.67 out of 5 stars ( 3 )

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Transmission Crossmember, Steel, Black Powdercoated, Chevy, GMC, Each

Part Number: SUM-770545

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Estimated Ship Date: Dec 23, 2026 if ordered today

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Transmission Crossmember, Steel, Black, Chevy, GMC, Kit

Part Number: TRD-6421

3.88 out of 5 stars ( 24 )

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Transmission Frame Extension, Steel, Black, GM G-body, Automatic, Manual, Each

Part Number: SUM-770307

4.7 out of 5 stars ( 10 )

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Crossmember, Engine, Steel, Black, Chevy, GMC, Truck, Cummins Conversion, 6BT, Each

Part Number: SUM-770360

4.14 out of 5 stars ( 7 )

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Transmission Crossmember, GM Gen III/IV, Gen V Swap, Blackheart, Steel, Black Powdercoat, Chevrolet, GMC, Each

Part Number: HOK-BHS549

5.0 out of 5 stars ( 2 )

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Transmission Crossmember, LS Swap, Steel, Black, Buick, Chevrolet, GMC, Oldsmobile, Pontiac, Kit

Part Number: TRD-6422

2.0 out of 5 stars ( 1 )

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Transmission Crossmember, Steel, Black Powdercoated, Chevy, GMC, TH350, TH400, Powerglide, 700R4, Each

Part Number: CLP-CP90171

3.69 out of 5 stars ( 42 )

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Frame Brace, Chassis Stiffening Kit, Steel, 73-87 Chevy/GMC C-Series Truck, Short Bed, Kit

Part Number: SUM-770824

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Rear Crossmember, Center Frame, OE-Style, Weld-In, HD 11-Gauge Steel, Natural Finish, with Class 10.9 Installation Hardware, Chevy, C/K Series, Each

Part Number: RBF-RB7375

5.0 out of 5 stars ( 1 )

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Transmission Crossmember, GM Gen III/IV, Gen V Swap, Blackheart, Steel, Black Powdercoat, Chevrolet, GMC, Each

Part Number: HOK-BHS550

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Transmission Crossmember, Steel, Black Powdercoated, Chevy, GMC, Each

Part Number: GMF-120-5117

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Chassis Stiffeners, Rear, Frame Brace, Black Powdercoated, Chevrolet, GMC, Each

Part Number: UPI-6426-B

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Estimated Ship Date: Feb 1, 2027 if ordered today

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Shock Braces, Steel, Black Powdercoated, Rear, Buick, Chevrolet, GMC, Oldsmobile, Pontiac, Each

Part Number: AAX-300331

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Estimated Ship Date: Nov 16, 2026 if ordered today

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Transmission Crossmembers, Steel, Black Powdercoated, Frame Extension, Buick, Chevrolet, GMC, Oldsmobile, Pontiac, 4L80E, 4L85E, Each

Part Number: SUM-770286

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Estimated Ship Date: Dec 23, 2026 if ordered today

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