Availability
1987 PONTIAC FIREBIRD Differential & Rear-End Components
Ring and Pinion Gears, Pro Series, 3.90:1 Ratio, GM, 7.5 in., Set
Part Number: MGR-G975390
Not Yet Reviewed
Estimated Ship Date: Feb 13, 2026 if ordered today
Estimated Ship Date: Feb 13, 2026 if ordered today
Differential, Lock-Right, Locker, 26-Spline, GM, 7.625 in., Each
Part Number: PWT-1932-LR
Estimated Ship Date: Mar 13, 2026 if ordered today
Estimated Ship Date: Mar 13, 2026 if ordered today
Ring and Pinion Kit
Part Number: RMG-GM75355TK
Not Yet Reviewed
Estimated Ship Date: Feb 12, 2026 if ordered today
Estimated Ship Date: Feb 12, 2026 if ordered today
Pinion Crush Sleeves, Steel, GM, 7.5 in., 7.6 in., 7.625 in., Pair
Part Number: RNB-81058
Estimated Ship Date: Monday 1/26/2026
Estimated Ship Date: Monday 1/26/2026
Ring and Pinion Gears,USA Standard 7.5"/7.625" GM, 4.11 Ratio Rear Ring & Pinion GearInstall Kit 2.25" OD Axle Bearings & Seals
Part Number: SPZ-10694
Not Yet Reviewed
Estimated Ship Date: Feb 9, 2026 if ordered today
Estimated Ship Date: Feb 9, 2026 if ordered today
Gear, Ring and Pinion, 4.10:1 Ratio, GM, 7.5 in./7.625 in., 10-Bolt, 3 Series, Set
Part Number: RMG-6903221
Estimated Ship Date: Monday 1/26/2026
Estimated Ship Date: Monday 1/26/2026
Differential Carrier Gear Kit
Part Number: RMG-XL-4040
Not Yet Reviewed
Estimated Ship Date: Feb 12, 2026 if ordered today
Estimated Ship Date: Feb 12, 2026 if ordered today
Ring and Pinion Gears, 4.11:1 Ratio, GM 7.50 in./7.625 in., Set
Part Number: YGA-24147
Estimated Ship Date: Feb 23, 2026 if ordered today
Estimated Ship Date: Feb 23, 2026 if ordered today
Ring and Pinion Gears, 3.08:1 Ratio, 27-spline, Standard Rotation, GM 7.5 in., GM 7.625 in., Set
Part Number: YGA-24476
Not Yet Reviewed
Estimated Ship Date: Feb 24, 2026 if ordered today
Estimated Ship Date: Feb 24, 2026 if ordered today
Gear, Ring and Pinion, 4.56:1 Ratio, 1.438 in. Pinion, 27 Spline, 7.500 in. Ring Gear, Series 3 Carrier, GM 7.5/7.6 in., Set
Part Number: YGA-24483
Not Yet Reviewed
Estimated Ship Date: Feb 23, 2026 if ordered today
Estimated Ship Date: Feb 23, 2026 if ordered today
Ring and Pinion Gears, 3.23:1 Ratio, 27-spline, Standard Rotation, GM 7.5 in., GM 7.6 in., Set
Part Number: YGA-24477
Estimated Ship Date: Feb 23, 2026 if ordered today
Estimated Ship Date: Feb 23, 2026 if ordered today
Yukon Dura Grip case, GM 7.5 & 7.625", 3.23 & up
Part Number: YGA-20106
Not Yet Reviewed
Estimated Ship Date: Feb 23, 2026 if ordered today
Estimated Ship Date: Feb 23, 2026 if ordered today
Ring and Pinion Kit
Part Number: RMG-XL-1044-1
Not Yet Reviewed
Estimated Ship Date: Feb 12, 2026 if ordered today
Estimated Ship Date: Feb 12, 2026 if ordered today
Ring and Pinion Gears, 4.11:1 Ratio, 10-bolt, 27-spline, Standard Gear Rotation, GM, 7.5 in., Set
Part Number: SPZ-36199
Not Yet Reviewed
Estimated Ship Date: Feb 9, 2026 if ordered today
Estimated Ship Date: Feb 9, 2026 if ordered today
Ring and Pinion Gears, 2.73:1 Ratio, 27-spline, Standard Rotation, GM 7.5 in., GM 7.625 in., Set
Part Number: YGA-24475
Not Yet Reviewed
Estimated Ship Date: Feb 24, 2026 if ordered today
Estimated Ship Date: Feb 24, 2026 if ordered today
Yukon standard open carrier case, GM 7.625", 3.23 & up
Part Number: YGA-20089
Not Yet Reviewed
Estimated Ship Date: Feb 23, 2026 if ordered today
Estimated Ship Date: Feb 23, 2026 if ordered today
Gear, Ring and Pinion, 4.56:1 Ratio, GM, 7.5 in./7.625 in., 3 Series, Set
Part Number: MGR-G875456
Not Yet Reviewed
Estimated Ship Date: Feb 13, 2026 if ordered today
Estimated Ship Date: Feb 13, 2026 if ordered today
Need It Sooner? We recommend these similar substitute parts:
Allstar Performance Ring and Pinion Gear Sets ALL70118 GM 7.5/7.625 in. 4.56 Gears
Estimated Ship Date: Monday 1/26/2026
RING GEAR BOLT EACH
Part Number: MGR-PB179-2-L
Not Yet Reviewed
Estimated Ship Date: Monday 1/26/2026
Estimated Ship Date: Monday 1/26/2026
Ring and Pinion Gears, GM 7.5/7.6 in., 3.08:1 Ratio, 27-spline, Standard Rotation, GM 7.5/7.6 in., Buick, Chevy, GMC, Hummer, Isuzu, Pontiac, Set
Part Number: SPZ-36193
Not Yet Reviewed
Estimated Ship Date: Feb 9, 2026 if ordered today
Estimated Ship Date: Feb 9, 2026 if ordered today
Gear, Ring and Pinion, 4.56:1 Ratio, GM, 7.5 in., Set
Part Number: MGR-GM75-456
Not Yet Reviewed
Estimated Ship Date: Feb 12, 2026 if ordered today
Estimated Ship Date: Feb 12, 2026 if ordered today
Spider Gears, Side Gears, Cross Pin Shaft, Roll Pin, 28 Spline, Posi, Rear, GM 7.5 in., GM 7.625 in., Kit
Part Number: YGA-16117
Not Yet Reviewed
Estimated Ship Date: Feb 23, 2026 if ordered today
Estimated Ship Date: Feb 23, 2026 if ordered today
USA Standard Ring & Pinion "thick" gear set for GM 7.5" in a 4.11 ratio
Part Number: SPZ-36200
Estimated Ship Date: Feb 9, 2026 if ordered today
Estimated Ship Date: Feb 9, 2026 if ordered today
Ring and Pinion Gears, 3.23:1 Ratio, 27-spline, Standard Ring Gear Rotation, GM 7.5 in., GM 7.625 in., Set
Part Number: SPZ-36194
Not Yet Reviewed
Estimated Ship Date: Feb 9, 2026 if ordered today
Estimated Ship Date: Feb 9, 2026 if ordered today
Yukon Pinion install kit for GM 7.75" differential
Part Number: YGA-13065
Not Yet Reviewed
Estimated Ship Date: Feb 23, 2026 if ordered today
Estimated Ship Date: Feb 23, 2026 if ordered today
Differential Shims, Super Carrier Shims Type, Steel, Buick, Chevrolet, GMC, Isuzu, Oldsmobile, Pontiac, Kit
Part Number: YGA-16047
Estimated Ship Date: Feb 24, 2026 if ordered today
Estimated Ship Date: Feb 24, 2026 if ordered today
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