T: +8615609213525
E: 15829336298@139.com
E: 15829336298@139.com
Room 1212-G107, Unit 2, Building 1, Block A, Shenglong Plaza, No. 80 Weiyang Road, Weiyang District, Xi'an City, Shaanxi Province
| Quantity: | |
|---|---|
AZ9725590031
Sinotruk HOWO
| Attribute | Description |
|---|---|
| Part Name | Engine Rear Support / Engine Rubber Mount / Rear Engine Mounting Pad |
| OEM Number | AZ9725590031 |
| Alternate Numbers | WG9725590031, AZ9725592031, WG9725590416 (right-side counterpart) |
| Position | Rear engine mounting point — typically near flywheel housing or gearbox area |
| Mount Type | Wedge-shaped support with integrated rubber-metal bonding |
| Material | |
| • Outer Frame: High-strength steel alloy | |
| • Core: Vibration-damping rubber compound (natural rubber or EPDM) | |
| Rubber Properties | Oil-resistant, heat-resistant, anti-aging (operates from -30°C to +120°C) |
| Weight | Approx. 4 – 6 kg per unit |
| Load Capacity | Designed to support several hundred kilograms under dynamic conditions |
| Damping Performance | Absorbs engine vibration, torsional shock, and road-induced impacts |
| Sealing Level | Fully sealed design — resistant to oil mist, moisture, and dust |
| Function | |
| • Supports rear engine mass | |
| • Reduces NVH (Noise, Vibration, Harshness) | |
| • Maintains driveline alignment | |
| • Prevents stress cracking in engine brackets | |
| Condition | Brand new (OEM fresh stock or premium aftermarket) |
Name1
Name2
Professional Installation Required
Involves lifting the engine slightly — must be done by trained technicians using engine support bars and safety stands.
Never rely solely on hydraulic jacks.
Support the Engine Properly
Use an engine hoist or support fixture mounted to the chassis rails.
Remove only one mount at a time if possible.
Replace in Pairs When Necessary
If one rear mount is damaged, inspect all other engine supports.
Replace together to ensure balanced load distribution.
Align Before Final Tightening
Ensure mounting holes align perfectly before tightening bolts.
Misalignment causes stress and early failure.
Torque Bolts to Specification
Typically requires 100–150 Nm, depending on thread size.
Under-tightening → loosening; Over-tightening → cracked bracket or stripped threads.
Inspect for Oil Contamination
Oil-soaked mounts lose elasticity — replace immediately if swollen or sticky.
Address root cause (oil leak) before installation.
Check for Cracks and Separation
Rubber tearing
Metal fatigue
Delamination between steel and rubber
Look for visible signs of:
Replace at first sign of damage.
Avoid Using Damaged Units
Do not install a cracked or deformed mount — risk of complete structural failure.
Use Genuine or High-Quality Replacements
Low-cost imitations often use inferior rubber that hardens quickly.
Choose OEM or reputable brands for reliability.
Storage Advice
Store upright in dry indoor environment.
Keep away from ozone sources (e.g., motors) and direct sunlight.
| Attribute | Description |
|---|---|
| Part Name | Engine Rear Support / Engine Rubber Mount / Rear Engine Mounting Pad |
| OEM Number | AZ9725590031 |
| Alternate Numbers | WG9725590031, AZ9725592031, WG9725590416 (right-side counterpart) |
| Position | Rear engine mounting point — typically near flywheel housing or gearbox area |
| Mount Type | Wedge-shaped support with integrated rubber-metal bonding |
| Material | |
| • Outer Frame: High-strength steel alloy | |
| • Core: Vibration-damping rubber compound (natural rubber or EPDM) | |
| Rubber Properties | Oil-resistant, heat-resistant, anti-aging (operates from -30°C to +120°C) |
| Weight | Approx. 4 – 6 kg per unit |
| Load Capacity | Designed to support several hundred kilograms under dynamic conditions |
| Damping Performance | Absorbs engine vibration, torsional shock, and road-induced impacts |
| Sealing Level | Fully sealed design — resistant to oil mist, moisture, and dust |
| Function | |
| • Supports rear engine mass | |
| • Reduces NVH (Noise, Vibration, Harshness) | |
| • Maintains driveline alignment | |
| • Prevents stress cracking in engine brackets | |
| Condition | Brand new (OEM fresh stock or premium aftermarket) |
Name1
Name2
Professional Installation Required
Involves lifting the engine slightly — must be done by trained technicians using engine support bars and safety stands.
Never rely solely on hydraulic jacks.
Support the Engine Properly
Use an engine hoist or support fixture mounted to the chassis rails.
Remove only one mount at a time if possible.
Replace in Pairs When Necessary
If one rear mount is damaged, inspect all other engine supports.
Replace together to ensure balanced load distribution.
Align Before Final Tightening
Ensure mounting holes align perfectly before tightening bolts.
Misalignment causes stress and early failure.
Torque Bolts to Specification
Typically requires 100–150 Nm, depending on thread size.
Under-tightening → loosening; Over-tightening → cracked bracket or stripped threads.
Inspect for Oil Contamination
Oil-soaked mounts lose elasticity — replace immediately if swollen or sticky.
Address root cause (oil leak) before installation.
Check for Cracks and Separation
Rubber tearing
Metal fatigue
Delamination between steel and rubber
Look for visible signs of:
Replace at first sign of damage.
Avoid Using Damaged Units
Do not install a cracked or deformed mount — risk of complete structural failure.
Use Genuine or High-Quality Replacements
Low-cost imitations often use inferior rubber that hardens quickly.
Choose OEM or reputable brands for reliability.
Storage Advice
Store upright in dry indoor environment.
Keep away from ozone sources (e.g., motors) and direct sunlight.
