1970-2017 GM 8.5/GM 8.5 in Limited Slip Differential 30 Spline (YDGGM8.5-3-30-1)Yukon recommends the use of high grade Non Synthetic GL 5 gear oil and Yukon LSD (Limited Slip Differential) additive for long life and smooth operation. Part number OILADD. The use of synthetic oil is not recommended and may result in aggressive or noisy operation. This unit uses carrier bearing & race part numbers LM102949 & LM102911 for the 8. 5" housing (2. 891" Race OD) or LM603049 & LM603012 for the GM 8. 6" housing (3. 062" Race OD). Features
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