1978 OLDSMOBILE CUTLASS-SUPREME Chassis Components

Crossmember, Transmission, Steel, Black, GM, TH200/TH350/M-21/M-22/Powerglide/Saginaw/Super T-10, Each

Part Number: SUM-770300

4.84 out of 5 stars ( 75 )

Estimated Ship Date: Monday 1/12/2026

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Transmission Crossmembers, LS Engine Swap Transmission Crossmembers, Steel, Black Powdercoated, Automatic, Buick, Chevrolet, GMC, Olds, Pontiac, Each

Part Number: HOK-12644HKR-1

3.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 1/12/2026

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

Part Number: SUM-770324

4.58 out of 5 stars ( 12 )

Estimated Ship Date: Monday 1/12/2026

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Chassis Stiffeners, Front Reinforcement Braces, Front Lower Position, Steel, Black Powdercoated, Buick, Chevrolet, Oldsmobile, Pontiac, Each

Part Number: UPI-3053-B

5.0 out of 5 stars ( 8 )

Estimated Ship Date: Monday 1/12/2026

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Strut Braces, Rear Upper, Black Powdercoated, Steel, Buick, Chevy, Oldsmobile, Pontiac, Each

Part Number: UPI-3055-B

4.59 out of 5 stars ( 17 )

Estimated Ship Date: Monday 1/12/2026

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Frame FX Kit, GM G-Body, Steel, Natural, Hellwig, Frame Rail Brace, Each

Part Number: HEL-11104

4.17 out of 5 stars ( 6 )

Estimated Ship Date: Monday 1/12/2026

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Frame Rail, Driver Side, Rear, Steel, EDP Coated, Buick, Chevy, Oldsmobile, Pontiac, Each

Part Number: GMK-4062770781L

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 1/12/2026

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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 )

Estimated Ship Date: Monday 1/12/2026

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

Part Number: SUM-770307

4.67 out of 5 stars ( 9 )

Estimated Ship Date: Monday 1/12/2026

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

Part Number: TRD-6422

2.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 1/12/2026

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Chassis Stiffeners, Front Reinforcement Braces, Front Lower Position, Steel, Red Powdercoated, Buick, Chevrolet, Oldsmobile, Pontiac, Each

Part Number: UPI-3053-R

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 1/12/2026

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Strut Braces, Rear Upper, Red Powdercoated, Steel, Buick, Chevy, Oldsmobile, Pontiac, Each

Part Number: UPI-3055-R

4.45 out of 5 stars ( 11 )

Estimated Ship Date: Monday 1/12/2026

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Frame Rail, Passenger Side, Rear, Steel, EDP Coated, Buick, Chevy, Oldsmobile, Pontiac, Each

Part Number: GMK-4062770781R

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 1/12/2026

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

Part Number: AAX-300331

Not Yet Reviewed

Estimated Ship Date: Monday 1/12/2026

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Trailing Arm Brackets, Lower, 3.00 in. Tubing Diameter, Steel, Natural, Weld-on, Pair

Part Number: PE2-HMBLMULTI

Not Yet Reviewed

Estimated Ship Date: Monday 1/12/2026

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Trailing Arm Brackets, Lower, 3.00 in. Tubing Diameter, Steel, Natural, Bolt-on, Pair

Part Number: PE2-S0181

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Estimated Ship Date: Monday 1/12/2026

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Transmission Crossmember, X-Factor, Aluminum, Black Powdercoated, Adjustable, Buick, Chevrolet, Oldsmobile, Pontiac, Each

Part Number: AWR-XMGM-20013

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Mar 10, 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

Not Yet Reviewed

Estimated Ship Date: Mar 3, 2026 if ordered today

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Frame Repair Plate, Rear, Steel, Natural, 0.125 in. Thick, Buick, Chevy, GMC, Oldsmobile, Pontiac, Each

Part Number: AAF-ALL60085

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 1/12/2026

Transmission Crossmember, Steel, Black Powdercoated, G-Body, Buick, Chevy, GMC, Oldsmobile, Pontiac, Each

Part Number: SUM-770557

Not Yet Reviewed

Estimated Ship Date: Mar 3, 2026 if ordered today

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Transmission Crossmember, Lightweight, Steel, Black Powdercoated, G-Body, Buick, Chevy, GMC, Oldsmobile, Pontiac, Each

Part Number: SUM-770555

Not Yet Reviewed

Estimated Ship Date: Monday 1/12/2026

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Transmission Crossmembers, Steel, Black Powdercoated, Frame Extension, Buick, Chevrolet, GMC, Oldsmobile, Pontiac, T-56 Manual, Each

Part Number: SUM-770287

Not Yet Reviewed

Estimated Ship Date: Mar 3, 2026 if ordered today

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Crossmember, Transmission, Steel, Black, GM, T-56, Each

Part Number: SUM-770305

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Mar 3, 2026 if ordered today

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Transmission Crossmember, Steel, Black Powdercoated, G-Body, Buick, Chevy, GMC, Oldsmobile, Pontiac, Each

Part Number: SUM-770556

Not Yet Reviewed

Estimated Ship Date: Mar 3, 2026 if ordered today

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