Part Number: 4419850 Fit For Isuzu Engine:4BG1 Applications: Fit For Hitachi Excavator: ZX110, ZX110-E, ZX110M, ZX120, ZX120-E, ZX120-HCMC, ZX125US, ZX125US-E, ZX130-AMS, ZX130-HCME, ZX130H, ZX130K, ZX135UR, ZX135US, ZX135US-E, ZX135US-HCME, ZX135USK, ZX135UST, ZAXIS120, ZAXIS135US. Fit For John Deere Excavator:135C, 135C RTS. Packs Includes: 1 x Muffler note: 1.