Motive Gear GM10.5-488X Differential Ring & Pinion, For GM 10.5" 14-Bolt, Gear Ratio 4.88, 12-Bolt, 30 Spline, 8 Pinion & 39 Ring Tooth -Fits GM Trucks Replaces G2 2-2023-488X, Yukon 24138, GM 180130X

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Management number 228389501 Release Date 2026/05/31 List Price $164.51 Model Number 228389501
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High-Performance Motive Gear GM10.5-488X Ring & Pinion Set – 4.88 RatioBuilt for GM 10.5" 14-bolt rear axles, the Motive Gear GM10.5-488X ring and pinion set is ideal for high-torque trucks and off-road vehicles requiring thick gear setups. Made from premium 8620 steel and engineered to fit carriers designed for 4.10 and numerically lower ratios, this 4.88 gear set offers strength, quiet operation, and long-lasting performance.Key FeaturesGear Ratio: 4.88 (Thick)Ring Gear Diameter: 10.5"Ring Gear Tooth Count: 39Pinion Gear Tooth Count: 8Pinion Shaft Diameter: 1.75"Pinion Spline Count: 30Ring Gear Material: 8620 SteelRing Gear Bolt Count: 12Differential Carrier Break: 4.10 and LowerVehicle CompatibilityFits GM 10.5" 14-Bolt Rear Axles in the following applications:ChevroletSilverado 2500/2500 HD (1999–2018)Suburban 2500 (2000–2013, 2014–2018)Avalanche 2500 (2002–2006)Express 2500/3500 (1996–2002, 2010–2014)C/K Series, G30, P30, R/V Series (1973–2000)GMCSierra 2500/2500 HD (1999–2018)Yukon XL 2500 (2000–2013)Savana 2500/3500 (1996–2018)C/K Series, G3500, P3500, R/V Series (1973–2000)Replaces OEM & Aftermarket Part NumbersGM: 180130XG2 Axle & Gear: 2-2023-488XYukon Gear & Axle: 24138, YG GM14T-488TRevolution Gear & Axle: GM10.5-488TEXCEL from Richmond: GM105488TKNitro Gear & Axle: GM14T-488T-NGWarranty & Quality AssuranceBacked by a 1-Year / 50,000-Mile Warranty, Motive Gear products are engineered for superior performance and longevity in demanding environments. Trusted by off-roaders, towers, and daily drivers alike.

  • 4.88 Ratio Thick Gear Set for GM 10.5" 14-Bolt Rear Differentials; uses carriers originally for 4.10 or numerically lower ratios.
  • Premium 8620 steel construction ensures durability, long life, and performance under heavy-duty torque loads.
  • Features 12 ring gear bolts, 8 pinion teeth, 39 ring gear teeth, 30-spline pinion shaft, 1.75" diameter.
  • Fits a wide range of GM trucks, vans, and SUVs including Silverado 2500 HD, Suburban 2500, Sierra 2500 HD, and Express/Savana 3500.
  • 1-Year / 50,000-Mile Warranty—Replaces GM 180130X, Yukon YG GM14T-488T, EXCEL GM105488TK, and more.
ASIN B001P28XRO
Brand Motive Gear
Model Ring and Pinion
Exterior Machined
Item Weight 0.01 ounces
Manufacturer Motive Gear
OEM Part Number GM10.5-488X
Item model number GM10.5-488X
Product Dimensions 15.5 x 11 x 5.25 inches
Manufacturer Part Number GM10.5-488X

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