View 1 Photo View 0 Videos 41 Spline Side Gear Meritor-Rockwell RT40-145/RS21-145, Serial # 2234U1269 $66.40 USD 41 SPLINE SIDE GEAR RT40-145, RS21-145 4, Serial#: 2234U1269, Core Charge: N/A, Casting#: 2234U1269 ConditionNewPart Number2234U1269 S-9787 2234G1437 2234-M-1183Stock Number2234U1269 MLS Number13311503CategoryDifferential Misc. Parts Last Updated3/28/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info