Rear Leaf Spring Sub-Spring Bumper 8-94119958-0 8941199580 For ISUZU NKR/NPR/NQR 4BD1 4JB1 — OEM Rubber Stop Buffer With Mounting Bolt
Price:
Negotiable
MOQ:
20 pcs
Delivery Time:
5-8 Work Days
Brand:
YIMI
Product Description
Rear Leaf Spring Sub-Spring Bumper 8-94119958-0 8941199580
OEM Rubber Stop Buffer With Mounting Bolt for ISUZU NKR/NPR/NQR 4BD1 4JB1
Product Overview
The Rear Leaf Spring Bumper (Rubber Buffer Stop) with OEM numbers 8-94119958-0 and 8941199580 is a verified OEM-grade direct replacement for a wide range of ISUZU light and medium-duty trucks. This critical suspension component prevents metal-to-metal contact between the axle and chassis during full compression, absorbing impact energy and protecting suspension components.
- ✓ OEM Specification - Verified by ISUZU OEM part numbers 8-94119958-0, 8941199580 with cross-references 8972543870, 8983350390, 8941199581
- ✓ Proven Durability - High-quality rubber with integrated metal mounting bolt engineered for commercial truck operation
- ✓ Broad Compatibility - Fits ISUZU NKR, NPR, NQR, NRR, NPR-HD models from 1986 to 2024 with 4BD1, 4JB1, 4JH1, 4HK1 engines
- ✓ Verified Fitment - Confirmed for NPR66 (1991-2003), NPR71 (1998-2002), NKR77 (2002-2005), NPS59 (1992-1994) and many others
Failure Symptoms
- Harsh Bottoming-Out: Loud thud or metal-on-metal impact when driving over bumps
- Visible Cracking or Deterioration: Cracks, splits, or missing chunks from rubber buffer
- Sagging or Uneven Ride Height: Rear suspension sits lower than normal
- Reduced Load-Carrying Capacity: Excessive suspension compression under heavy loads
- Increased Suspension Noise: Rattling or clunking sounds from rear axle area
Warning: A worn or missing leaf spring bumper can lead to serious suspension and chassis damage over time. Prompt replacement is strongly recommended.
Vehicle & Engine Compatibility
| Brand | Model | Chassis / Series | Engine | Years |
|---|---|---|---|---|
| ISUZU | NKR | N-Series | 4BD1, 4JB1, 4JH1 | 1986-2024 |
| ISUZU | NKR77 | N-Series | 4JH1 | 11/2002 - 02/2005 |
| ISUZU | NPR | N-Series | 4BD1, 4JB1, 4JH1, 4HK1 | 1986-2024 |
| ISUZU | NPR57 | N-Series | 4BD1 | 1985-1987 |
| ISUZU | NPR58 | N-Series | 4BD1 | 1988-1995 |
| ISUZU | NPR59 | N-Series | 4BD1 | 1985-1994 |
| ISUZU | NPR66 | N-Series | 4BD1 | 1991-2002 |
| ISUZU | NPR70 | N-Series | 4BD1 | 2000-2005 |
| ISUZU | NPR71 | N-Series | 4BD1 | 1998-2002 |
| ISUZU | NPR75 | N-Series | 4BD1 | 07/2005-2007 |
| ISUZU | NPR-HD | N-Series | 4BD1, 4HK1 | --- |
| ISUZU | NPR-XD | N-Series | -- | --- |
| ISUZU | NPS | N-Series | 4BD1 | 1992-2005 |
| ISUZU | NQR | N-Series | 4BD1, 4HK1 | 1998-2008+ |
| ISUZU | NRR | N-Series | 4BD1, 4HK1 | --- |
| ISUZU | 700P | N-Series | 4HK1 | --- |
| ISUZU | ELF | N-Series | 4BD1, 4JB1 | --- |
Important Compatibility Notes
- Designed for rear leaf spring suspension systems only
- Compatible with ISUZU N-Series trucks across multiple chassis and engine variants
- Interchangeable with 8941199581, 8972543870, and 8983350390
- Verify your vehicle's chassis code, production year, and VIN before ordering
Features & Benefits
| Feature | Benefit + Verification Signal |
|---|---|
| OEM Specification - ISUZU Genuine Equivalent | Guarantees factory-fit quality and performance - verified by multiple OEM cross-references |
| High-Quality Rubber with Integrated Metal Bolt | Delivers durable shock absorption with secure, easy installation - verified by pre-threaded bolt design |
| Prevents Metal-to-Metal Contact | Protects the rear axle and chassis from impact damage during full suspension compression |
| Reduces Suspension Noise | Absorbs impact energy and minimizes vibration, ensuring a quieter, smoother ride |
| Protects Leaf Springs | Limits excessive compression and wear, extending the service life of the leaf spring assembly |
| Direct Bolt-On Fitment | No modifications required - verified by factory-style mounting bolt |
| 100% New - No Core Charge | Guarantees zero wear, immediate suspension performance, and full service life |
Quality Control & Verification
| QC Item | Verification Method |
|---|---|
| Dimensional Accuracy | Precision inspection to verify 70.5mm length, 62.0mm width, and M8 x 1.25mm bolt thread match OE blueprint specifications |
| Material Composition | High-quality rubber compound analysis to verify durability and impact absorption characteristics |
| Bond Strength Test | 100% testing of rubber-to-metal bond integrity to ensure separation failure is prevented |
| Mounting Bolt Integrity | Thread inspection and pull-out testing to ensure secure installation |
| Durability Cycle Test | 500+ hour fatigue testing to verify long-term reliability under heavy loads |
| Final Assembly Inspection | 100% visual and dimensional inspection before packaging |
Installation & Maintenance Recommendations
IMPORTANT: Professional Installation Recommended
Pre-Installation Checklist
- Safely raise the vehicle and support it on jack stands
- Inspect the leaf spring and mounting area for damage or debris
- Check the condition of the opposite side bumper - replace in pairs for balanced performance
- CRITICAL: This bumper is mounted on the rear axle - refer to the ISUZU workshop manual for exact location
Installation Guidelines
- Safely raise the vehicle and support it on jack stands
- Locate the rear leaf spring bumper on the axle (near the top of the leaf spring)
- Remove the mounting bolt securing the old bumper
- Remove the old, worn bumper
- Clean the mounting surface thoroughly
- CRITICAL: Install the new bumper with the integrated mounting bolt
- Torque the mounting bolt to manufacturer's specified torque settings (refer to ISUZU workshop manual)
- Lower the vehicle and test drive to verify smooth suspension operation
Maintenance Schedule
- Inspection: Every 50,000 km / 12 months, or after heavy off-road use. Check for cracks, splits, or deterioration of the rubber
- Replacement: Immediately if symptoms appear or if the rubber shows visible signs of aging or damage
- Note: Always replace in pairs (both left and right sides) for even suspension performance
Packaging & Supply
| Packaging | Each rubber bumper is securely packed in a plastic bag + color box |
| Single Package Size | Approx. 7 × 6 × 3.8 cm |
| Single Package Weight | Approx. 0.203 kg |
| MOQ | 1 piece |
| Payment Terms | T/T, Western Union |
| Warranty | 1 year |
| Suitable for | Wholesale distributors, truck parts retailers, commercial vehicle repair shops, and fleet owners |
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Get in Touch
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Company
Yimi (Guangzhou) Automotive Parts Co, Ltd
Location
Unit 1313, Building 5, Changsheng DDP Fashion Center, No. 17 Dachi Road, Tancun, Shijing Subdistrict, Baiyun District, Guangzhou City.
Contact Person
James