1973 PONTIAC FIREBIRD Chassis Components

Crossmember, Transmission, Steel, Black, GM, 700R4/4L60/4L60E, Each

Part Number: SUM-770315

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Today

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Crossmember, Transmission, Steel, Black, LS Swap, Chevy, Pontiac, Kit

Part Number: DOU-SKC104

2.0 out of 5 stars ( 1 )

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Transmission Crossmember, Steel, Black, Chevy, Pontiac, Kit

Part Number: TRD-6419

4.33 out of 5 stars ( 3 )

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

Part Number: GMK-4021-770-70L

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• Oversize $13.99

Subframe Connectors, Bolt-On, Steel, Black Powdercoated, Chevy, Pontiac, Pair

Part Number: ARH-AL-102412

4.45 out of 5 stars ( 11 )

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Transmission Crossmember, LS Engine Swap, Steel, Black Powdercoated, Chevy, Pontiac, Kit

Part Number: HOK-12614HKR

4.0 out of 5 stars ( 1 )

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Frame Rails, Steel, Rear, Chevy, Pontiac, Pair

Part Number: CEE-3032

4.25 out of 5 stars ( 4 )

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Transmission Crossmember, Steel, Black Hammertone, Auto, Manual, Chevy, Each

Part Number: HOK-12616HKR-1

2.33 out of 5 stars ( 3 )

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

Part Number: GMK-4021-770-70R

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• Oversize $13.99

Subframe Connectors, Weld-On rear, Bolt-On front, No Mods, Black Powdercoated, Steel, 70-73 Chevy, Pontiac, Pair

Part Number: HSS-4012

4.86 out of 5 stars ( 7 )

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Subframe Connectors, Chevy, Not for Convertibles, for Use with Factory Subframe, Pair

Part Number: HDT-RC-122

4.4 out of 5 stars ( 5 )

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Subframe Connectors, Weld-On, Steel, Black, Chevy, Pontiac, Pair

Part Number: GLS-901

4.75 out of 5 stars ( 4 )

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Subframe Connectors, Weld-on, Steel, Natural, Chevy, Pontiac, Kit

Part Number: DSR-010103DS

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Transmission Crossmember, Steel, Black Powdercoated, Tremec TKO 500/TKO 600/TKX, Chevrolet, Pontiac, Each

Part Number: BTM-4601012

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Estimated Ship Date: Feb 25, 2026 if ordered today

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Crossmember GM F2 Early 1970-74 TKO/TKX and F1 1967-69 A41

Part Number: IST-XMG-03000

5.0 out of 5 stars ( 1 )

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Transmission Crossmember, Steel, Black, Chevy, Pontiac, Kit

Part Number: TRD-6519

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Transmission Crossmember, Steel, Black Powdercoated, Chevy, Pontiac, 4L80E, 4L85E, Each

Part Number: SUM-770343

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Mar 23, 2026 if ordered today

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Transmission Crossmember, X-Factor, Aluminum, Silver Powdercoated, Chevy, Pontiac, Each

Part Number: AWR-XFGM10102M

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Feb 6, 2026 if ordered today

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Crossmember, Transmission, Steel, Black, GM, TH400, 200-4R, Each

Part Number: SUM-770314

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Estimated Ship Date: Mar 23, 2026 if ordered today

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Transmission Crossmember, X-Factor, Aluminum, Silver Powdercoated, 4L80E Automatic, Chevy, Pontiac, Each

Part Number: AWR-XFGM10502

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Mar 26, 2026 if ordered today

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Transmission Crossmember, Steel, Black Powdercoated, Chevy, Pontiac, T-56, Each

Part Number: SUM-770342

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Estimated Ship Date: Mar 23, 2026 if ordered today

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Crossmember GM F2 Early 1970-74 Magnum

Part Number: IST-XMG-17000

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Estimated Ship Date: Mar 2, 2026 if ordered today

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Crossmember GM F2 Early 1970-74 Magnum With Adapter Plate

Part Number: IST-XMG-17100

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Estimated Ship Date: Mar 2, 2026 if ordered today

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Transmission Crossmember, Steel, Black Powdercoated, F-Body, Chevy, Pontiac, Each

Part Number: SUM-770548

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Estimated Ship Date: Mar 23, 2026 if ordered today

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