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Sub Spring Rubber 8-97254387-0 For Isuzu NPR 8972543870 Auxiliary Bumper
Premium-quality direct replacement suspension component designed for Isuzu NPR series medium-duty trucks.
Product Specifications
Part Number
8-97254387-0, 8972543870
Product Name
Sub Spring Rubber / Auxiliary Spring Bumper / Overload Bumper
Car Model
ISUZU NPR
Engine Model
NKNPVH
Condition
100% Brand New
Origin
China Mainland
Warranty
6 Months
Function
Sub spring rubber (auxiliary spring bumper) absorbs impact during full suspension compression, preventing metal-to-metal contact between the axle and chassis frame. Provides progressive overload protection for Isuzu NPR trucks.
Features & Advantages
OE Quality: Manufactured to Isuzu dimensional and material specifications for perfect fit and reliable overload protection
Progressive Cushioning: Absorbs impact progressively as suspension compresses, preventing harsh bottoming out
Heavy-Duty Rubber Compound: Resists permanent compression set, tearing, and aging under heavy loads
Weather Resistant: Formulated to withstand UV, ozone, road salts, and temperature extremes
Protects Suspension Components: Prevents metal-to-metal contact, reducing fatigue on main springs, frame, and axle
Restores Ride Quality: Eliminates harsh clunks and improves comfort when carrying heavy loads
Direct Replacement: Matches OE mounting hole pattern and height - simple bolt-on installation
Cost-Effective: Affordable alternative to genuine OEM without compromising durability
Vehicle & Engine Compatibility
This sub spring rubber is specifically designed for Isuzu NPR trucks with rear leaf spring suspension.
May also fit other Isuzu medium trucks with similar rear suspension - verify
Engine Compatibility:
Not engine-specific - fits NPR regardless of engine (4HF1, 4HG1, 4HE1, 4HK1, etc.)
Installation Notes
Safely lift and support the rear of the vehicle - raise the rear and support the frame on jack stands. The rear axle should hang freely
Locate the sub spring rubber - usually mounted on the chassis frame above the rear axle or on the spring plate
Remove the old rubber - if bolt-on, remove the mounting bolt/nut. If press-fit, pry out with a screwdriver
Clean the mounting surface - remove rust and debris
Inspect the mounting bracket - check for cracks or damage
Install the new rubber - position onto mounting stud or bolt hole. If bolt-on, insert bolt and tighten to specification (typically 30-50 Nm). Do not overtighten (rubber may deform)
Repeat for the other side - replace both left and right bumpers simultaneously for balanced performance
Lower the vehicle - test drive over bumps to ensure no abnormal noise
Quality Control
Material Verification: Rubber compound tested for hardness (Shore A), tensile strength, and elongation per ASTM D2000
Dimensional Inspection: Overall height, outer diameter, mounting hole diameter/thread, and shape verified against OE blueprints
Compression Set Test: Sample compressed to 50% of original height at 70°C for 22 hours; permanent deformation measured
Tear Resistance Test: ASTM D624 die C tear strength verified
Aging Test: Accelerated heat aging (70°C for 70 hours) to confirm retained properties
Visual Inspection: 100% checked for voids, cracks, flash, or surface defects
Packaged Safely: Rubber bumper wrapped in plastic, boxed individually or in pairs
Packaging and Delivery
Neutral export packing or customized packaging available
Carton or wooden case for safe transportation
Fast delivery for stock items
Shipping by Express Air or Sea
Inquiry: For pricing, availability, or bulk purchase of the Sub Spring Rubber 8-97254387-0 For Isuzu NPR 8972543870 Auxiliary Bumper Isuzu Spare Parts, please contact our sales team for a competitive quote and expert technical support.
Yimi(Guangzhou) Automotive Parts Co,Ltd
located in Guangzhou—the economic and transportation hub of Southern China—we are a specialized supplier and exporter with over 20 years of experience in the automotive parts industry. We focus on the production and sales of high-quality automotiv... Yimi(Guangzhou) Automotive Parts Co,Ltd
located in Guangzhou—the economic and transportation hub of Southern China—we are a specialized supplier and exporter with over 20 years of experience in the automotive parts industry. We focus on the production and sales of high-quality automotiv...
