| Category |
HITACHI Spare Parts |
| Name |
Muffler |
| Parts No |
4385675 |
| Machine Number |
EX300-5 EX330-5 EX350-5 EX370-5 |
| Lead time |
1-3 DAYS |
| Quality |
Brand new, OEM quality |
| MOQ |
1 PCS |
| Means of transport |
By sea/air, DHL FEDEX UPS TNT |
| Packing |
As request or standard packing |
- Key functions & working principle
| Working Principle |
1. Exhaust Inlet: Hot exhaust gases (up to 650°C) from the engine’s exhaust manifold flow into the muffler through the inlet flange. |
2. Noise Reduction:
- Reactive Stage: Gases pass through a series of baffles and chambers, which reflect and disrupt sound waves (reducing low-frequency noise).
- Absorptive Stage: Gases then flow through sound-absorbing material (ceramic/fiberglass), which traps and dampens high-frequency noise. |
| 3. Gas Direction: The muffler’s internal channels direct cooled, quieted exhaust gases out through the outlet flange – routed away from the operator cab and job site personnel. |
| 4. Heat Management: The aluminized steel casing and ribbed design dissipate heat, preventing damage to nearby components (e.g., wiring, hydraulic lines) and reducing surface temperature for safety. |
| Core Functions |
1. Noise Control: Reduces exhaust noise to comply with global standards (EU Stage V, US EPA Tier 4) – protects operator hearing and minimizes job site noise pollution. |
| 2. Safety: Directs hot, toxic exhaust gases (CO, NOx) away from personnel and equipment – prevents burns and carbon monoxide exposure. |
| 3. Component Protection: Cools exhaust gases before they reach downstream components (e.g., diesel particulate filter/DPF) – extends the life of the exhaust aftertreatment system. |
| 4. Compliance: Ensures CAT equipment meets local environmental and noise regulations – critical for operation in urban or residential construction zones. |
EX300-5 EX300-5HHE EX300LC-5M EX300LCLL-5 EX345USR(LC) EX350H-5 EX350H-5HHE EX350K-5 EX370-5M EX370HD-5 EX385USR Hitachi
- More other muffler applied to HITACHI heavey machine
| 4443305 MUFFLER |
| EX345USR(LC), EX385USR |
| |
| 4300526 MUFFLER |
| EX12-2, EX15-2, EX18-2 |
| |
| 4625214 MUFFLER |
| MA200, SR2000G, ZH200-A, ZH200LC-A, ZR950JC, ZX170W-3, ZX170W-3-AMS, ZX170W-3DARUMA, ZX190W-3, ZX190W-3-AMS, ZX190W-3DARUMA, ZX200-3, ZX200-3-HCMC, ZX200-3F, ZX210-3-AMS, ZX210-3-HCME, ZX210H-3, ZX210... |
| |
| 4469579 MUFFLER |
| ZX75UR, ZX75URT, ZX75US-A, ZX75UST, ZX85US-HCME |
| |
| 4343338 MUFFLER |
| EX550-5 JPN, EX600H-3 JPN, EX600H-5 JPN |
| |
| 4255657 MUFFLER |
| EX100-2, EX100-3, EX100M-2, EX100M-3 |
| |
| 4190144 MUFFLER |
| LX80 |
| |
| KBT1497112112 MUFFLER,KS BLACK |
| TSR65KDS |
| |
| 4624746 MUFFLER;EXHAUST |
| 218HSL, SCX1200-2, SCX1500-2, SCX900-2 |
| |
| 4447086 MUFFLER |
| EX27U, EX30U, EX35U |
| Pos. |
Part No |
Qty |
Parts name |
Comments |
| 0 |
4385675 |
[1] |
MUFFLER |
|
| 1 |
7033139 |
[1] |
BRACKET |
|
| 2 |
4189055 |
[2] |
BOLT;U |
|
| 3 |
J950010 |
[8] |
NUT |
|
| 5 |
8069001 |
[1] |
PIPE;EXHAUST |
|
| 6 |
A590910 |
[4] |
WASHER;SPRING |
|
| 7 |
M521008 |
[4] |
NUT |
|
| 8 |
4368562 |
[1] |
GASKET |
|
| 9 |
4190587 |
[1] |
CLAMP |
|
| 09A. |
4162835 |
[1] |
GASKET |
|
| 09B. |
4162837 |
[2] |
NUT |
|
| 09C. |
4162836 |
[2] |
BOLT |
|
| 10 |
4402421 |
[4] |
RIVET |
|
| 11 |
4297136 |
[1] |
TUBE |
|
| 13 |
4396451 |
[1] |
CLAMP;HOSE |
|
| 14 |
8070200 |
[1] |
COVER |
|
| 15 |
4398654 |
[1] |
NAME-PLATE |
|
| 15 |
4407874 |
[1] |
NAME-PLATE |
|
| 16 |
4399633 |
[1] |
NAME-PLATE |
|
| 18 |
4344303 |
[1] |
CLIP |
|
| 19 |
J011020 |
[1] |
BOLT;SEMS |
|
| 20 |
4402421 |
[4] |
RIVET |
|
- We could supply the following spare parts
1 Hydraulic parts: hydraulic pump, main valve, hydraulic cylinder, final drive, travel motor, swing machinery, swing motor etc.
2 Engine parts: engine ass’y, piston, piston ring, cylinder block, cylinder head, crankshaft, turbocharger, fuel injection pump, starting motor and alternator etc.
3 Undercarriage part: Track roller, Carrier roller, Track Link, Track shoe, Sprocket, Idler and Idler cushion etc.
4 Cab parts: operator’s cab, wiring harness, monitor, controller, seat, door etc.
5 Cooling parts: Radiator, air conditioner, compressor, after cooler etc.
6 Other parts: Service kit, swing circle, engine hood, swing joint, fuel tank, filter, boom, arm, bucket etc.
Packing Details :
inner packing : plastic film for wrapping
external packing : wooden
Shipping :
within 3 days after received the payment , by air or by express or by sea on the basis of the
quantity and emergency circumstances.
1. By Couriers: DHL, UPS, FEDEX, TNT are the main courier companies we are cooperated,
2. By Air: Delivery from the Guangzhou air port to customer's destination city air port.
3. By Sea: Delivery from the Huangpu port .
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