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Rear Axle ID

Free Help to Identify Rear Axles in 4x4s, SUVs, and Light Trucks

  • 1957-1993 Dodge Dana 70 Rear Axle Identification IDN-140 1957-1967 Dodge Dana 70 Axle Data Number

    1957-1993 Dodge Dana 70 Rear Axle Identification IDN-140

    1957-1993 Dana Spicer Model 70 Rear Axles in Dodge 200, 250, 300, and 350 series trucks plus many Motorhome and Van chassis models  have a Bill of Material Number (BOM) that is either stamped on the rear face of the right axle tube or embossed on a...

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  • Dana 44 Diff Cover ID IDN-107

    Dana 44 Diff Cover ID IDN-107

    Dana 44 Beam Type Axles have 10 bolt covers that are approximately 10-3/8" high and 9-3/8" wide. For most applications, the bolt head size is 1/2" and the bolt thread is 5/16 USS coarse thread. Early covers (up to the mid 1970's) are made of thin steel...

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  • Dana 70 Diff Cover Flange Height IDN-111

    Dana 70 Diff Cover Flange Height IDN-111

    Not all Dana axles have the model number cast on the housing. It can be very difficult to tell a Dana 60 from a Dana 70, as they have nearly identical covers with exactly the same bolt pattern. One way to tell if you have a Dana 60 or Dana 70 is...

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  • Dana Axle ID Tag IDN-100 Dana BOM Tag retained by 2 Diff Cover Bolts

    Dana Axle ID Tag IDN-100

    Starting around 1965, Dana started using metal tags affixed to the differential cover by two of the cover bolts. Each tag has a Bill of Material Number (BOM) stamped on it and it is affixed to the axle before it is shipped from the factory. The photo...

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  • Dana Rear Axle Tag Location IDN-109

    Dana Rear Axle Tag Location IDN-109

    All 1994-2002 Dana Rear Axles in Dodge Ram trucks have a Bill of Material Number (BOM) stamped on a Build Tag (red arrow) attached to the differential by two of the differential cover bolts (yellow arrows). The BOM number is a 6 digit number...

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  • Jeep Dana Axle Axle Codes and Build Tags IDN-130 Jeep Dana Axle Axle Codes and Build Tags IDN-130

    Jeep Dana Axle Axle Codes and Build Tags IDN-130

    Jeep has used Dana Spicer axles since 1941. We do not know when Dana started stamping identification numbers on the axle tubes, but most axles built since the mid 1950's will have a axle code stamped on one of the axle tubes. The original axle codes...

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