2 0 2018 Eaton S21-170 Rear Axle Housing for a Peterbilt 337 $1,250 USD (USED) Eaton S21-170 Brake Type: AIR DRUM Wheel Type: PILOT Suspension: AG400L Track Width : 72 ConditionUsedFits To Make(s)PeterbiltFits To Model(s)337Stock Number25744568 MLS Number13368295CategoryAxle Housings, Rear Last Updated4/12/2025 LocationSioux Falls, SD, US Sold ByVander Haag's Inc. (855) 370-___ SHOWNUMBERCall Seller Email Seller Save More Info