Rear Leaf Spring Assembly 8-97033505-1 8970335051 8-97033-505-1 For ISUZU NKR55 / ELF 250 4JB1 2.8L Diesel — OEM Multi-Leaf Rear Suspension Spring With Bushings
| OEM Part Number: | 8-97033505-1 / 8970335051 / 8-97033-505-1 | Part Name: | SPRING ASM; LEAF, RR / Rear Leaf Spring Assembly |
| Fitting Position: | Rear Axle, Left Or Right | Number of Leaves: | 4+1 (4 Main Leaves + 1 Helper/overload Leaf) |
| Leaf Section: | 70×11mm, 70×10mm | Spring Width: | 70 Mm (2-3/4″) |
| Length (L): | 1314 Mm | Length (L'): | 1251 Mm |
| Length L1 / L2: | 630 Mm / 621 Mm | Arch Height (H): | 160/80 Mm |
| Bushing Diameter (d1): | 42 Mm | Pin Diameter (d2): | 40 Mm |
| Net Weight: | Approx. 50.7 Kg | Material: | High-Strength Spring Steel |
| Includes: | Bushings And Silents | Vehicle Compatibility: | ISUZU NKR55 |
| Engine Compatibility: | ISUZU 4JB1 2.8L Diesel | Condition: | Brand New — 100% Quality Inspected |
| Warranty: | 12 Months | ||
| High Light: | Isuzu NKR55 rear leaf spring,OEM multi-leaf suspension spring,Isuzu ELF 250 diesel suspension |
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OEM Multi-Leaf Rear Suspension Spring With Bushings for ISUZU NKR55 / ELF 250 4JB1 2.8L Diesel
This Rear Leaf Spring Assembly with OEM numbers 8-97033505-1 (also listed as 8970335051, 8-97033-505-1) is a verified OEM-grade direct replacement for ISUZU NKR55 light-duty trucks equipped with the 4JB1 2.8L diesel engine. As a critical component of the rear suspension system, this multi-leaf spring supports the vehicle's load, absorbs road impacts, and maintains proper axle positioning for stable handling and ride comfort under demanding commercial transport conditions.
- OEM Specification – Verified by ISUZU OEM part numbers 8-97033505-1, 8970335051, and 8-97033-505-1
- Precision Multi-Leaf Construction – Engineered with 4+1 leaves and 70mm width
- Proven Durability – Constructed from high-strength spring steel with 70×11mm and 70×10mm leaf sections
- Installation Success Rate – 99% direct bolt-on fitment
- Complete Assembly – Supplied with bushings and silents for comprehensive installation
- OEM Cross-Reference Verified – Replaces 8-97033505-0, 8970335050, and 8970732241
If your rear leaf spring is failing, you may experience one or more of the following symptoms:
- Sagging Rear End: The rear of the vehicle sits visibly lower than normal
- Clunking or Banging Noises: Metallic sounds from the rear suspension when driving over bumps
- Poor Ride Quality: Excessive bouncing or harsh ride
- Uneven Tire Wear: Premature or irregular rear tire wear
- Visible Cracks or Broken Leaves: Cracks, fractures, or missing leaf segments
- Vehicle Pulls or Wanders: Difficulty maintaining straight-line stability
| Brand | Model | Chassis / Series | Engine | Notes |
|---|---|---|---|---|
| ISUZU | NKR55 | N-Series | 4JB1 2.8L Diesel | Primary application |
| ISUZU | ELF 250 | N-Series | 4JB1 | Compatible |
| ISUZU | NKR | N-Series | 4JB1 | Compatible |
- Designed for ISUZU NKR55 models with 4JB1 2.8L diesel engines
- Quantity Required: 2 per vehicle (one for each rear side)
- Complete assembly including bushings and silents
- 4+1 leaf configuration with helper/overload leaf for enhanced load capacity
- Verify your vehicle's chassis code, production year, and VIN before ordering
| Feature | Benefit |
|---|---|
| OEM Specification – ISUZU Genuine Equivalent | Guarantees factory-fit quality and performance |
| 4+1 Leaf Construction | Provides optimal load-carrying capacity with dedicated helper leaf |
| 70×11mm / 70×10mm Leaf Sections | High-strength spring steel for exceptional durability |
| Complete Assembly with Bushings | Ready for installation without additional components |
| Precision-Engineered Dimensions | 1314mm overall length for exact fitment |
| Direct Bolt-On Fitment | No modifications required |
| 100% New – No Core Charge | Guarantees zero wear and full service life |
| QC Item | Verification Method |
|---|---|
| Dimensional Accuracy | Precision inspection to verify 1314mm length and 70mm width |
| Material Composition | High-strength spring steel analysis |
| Hardness Testing | Rockwell hardness testing |
| Load Deflection Test | Dynamic load testing for spring rate verification |
| Fatigue Cycle Test | 500,000+ cycle fatigue testing |
| Final Assembly Inspection | 100% visual and dimensional inspection |
Leaf spring replacement requires specialized tools, proper support equipment, and expert knowledge of suspension systems.
Pre-Installation Checklist:
- Verify this is a rear leaf spring assembly
- Quantity Required: 2 per vehicle (one for each rear side)
- Inspect U-bolts, shackles, pins, and bushings for wear
- Clean the axle mounting surface thoroughly
- Ensure the vehicle is securely supported on jack stands
Maintenance Schedule:
- Inspection: Every 50,000 km / 12 months
- Lubrication: Periodically lubricate spring eye bushings and shackle pins
- Replacement: Immediately if failure symptoms appear
- Note: Replace leaf springs in pairs for even suspension performance
- Packaging: Heavy-duty packaging to prevent shipping damage
- Single Package Weight: Approx. 50.7 kg
- Set Contents: 1 Rear Leaf Spring Assembly with bushings and silents
- Quantity Required: 2 per vehicle
- Suitable for: Wholesale distributors, truck parts retailers, commercial vehicle repair shops, and fleet owners
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