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|Diaphragm Diameter:||10.750 in|
|Diaphragm Type:||Dual Diaphragm|
|Master Cylinder Included:||No|
|Master Cylinder Stud Thread Size:||M10 x 1.5|
|New Or Remanufactured:||Remanufactured|
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Q:what is the difference between this part (54-71087) and #54-71048. I have option JM3 on my 94 Jimmy and I have seen different information. I have a 4WD Automatic trans.
A:In the part number (54-71087) brake booster type is delco. It got dual diaphragm and it has no brake pedal extension rods and in the part number (54-71048) brake booster type is vacuum diaphragm and it has brake pedal extension rods.