Hardened Steel Rocker Arm Shaft Assembly with Precision-Drilled Oil Passages for Isuzu NPR59 4BD1 - OEM Standard Fitment

Name: Hardened Steel Rocker Arm Shaft Assembly with Precision-Drilled Oil Passages for Isuzu NPR59 4BD1 - OEM Standard Fitment
Brand: Yimi (Guangzhou) Automotive Parts Co, Ltd
SKU: ISUZU NPR59
Availability: InStock

Basic Properties

Place of Origin: China

Brand Name: YIMI

Certification: ISO/TS16949

Model Number: ISUZU NPR59

Trading Properties

Minimum Order Quantity: 10 pcs

Price: Negotiable

Payment Terms: T/T,

Supply Ability: 10000 pcs/month

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Specifications

Part Number:	WDL11-028, 8-94129551-0, 8941295510	Engine Model:	ISUZU 4BD1 (3.9L Diesel)
Material:	Hardened Steel (shaft), Alloy Steel (rocker Arms)	Oil Passages:	Precision-drilled For Lubrication
Heat Treatment:	Induction-hardened (HRC 55-60)	Cooling Type:	Engine Coolant Circulation
Installation Type:	Direct OEM Replacement	Quality Standard:	OEM Equivalent / ISO
High Light:	Hardened Steel Rocker Arm Shaft , Precision-Drilled Oil Passages Rocker Arm , OEM Standard Rocker Arm Shaft

Product Description

Rocker Arm Shaft Assembly WDL11-028 For Isuzu NPR59 4BD1 8-94129551-0 Truck Parts

Product Specifications

Part Number	WDL11-028, 8-94129551-0, 8941295510
Product Name	Rocker Arm Shaft Assembly / Rocker Shaft
Car Model	ISUZU NPR59
Engine Model	ISUZU 4BD1 (3.9L Diesel)
Condition	100% Brand New
Size	Standard
Weight	Standard
Origin	China Mainland
Main Market	Middle East, Asia, Africa, South America, North America & Europe
Package	Neutral Packing Or Make It As Requested
Warranty	6 Months
Price & Stock	Please Contact Us To Get More Information
Material	High-strength aluminum alloy & precision bearings
Cooling Type	Engine coolant circulation
Installation	Direct OEM replacement
Quality Standard	OEM equivalent / ISO quality control

Rocker Arm Shaft Assembly for Isuzu NPR59 4BD1 engine

Features & Advantages

OE Quality: Manufactured to Isuzu dimensional and metallurgical specifications for perfect fit and reliable valve actuation.
Precision Ground Shaft: Smooth, hardened surface reduces wear on rocker arm bushings.
Integrated Oil Passages: Ensures consistent lubrication to all rocker arm pivot points.
Complete Assembly: Includes shaft, rocker arms, springs, and retainers - ready to install.
Heat-Treated: Induction-hardening provides wear resistance (HRC 55-60) while maintaining core toughness.
Restores Valvetrain Performance: Eliminates tapping noise, uneven valve lift, and oil pressure loss.
Direct Replacement: Matches OE bore spacing, mounting holes, and oil feed alignment.
Cost-Effective: Affordable alternative to genuine OEM assemblies.

Frequently Asked Questions

Q1: Are you factory or trading company?

A: We're trading company, but we're wholesalers.

Q2: How can I get the price?

A: Please feel free to contact us to learn the price. If with part number, engine model and quantity, we will send the best price as soon as possible.

Q3: What is your terms of packing?

A: Generally, we pack products with neutral packing and outside brown cartons. We also can make it as customers' requirement.

Q4: How about your delivery time?

A: The goods will be sent within 2-5 days if available. Regarding bulk production, delivery time is about 15-45 days after deposit. It depends on the items and quantity of your order.

Q5: What is your terms of delivery and payment?

A: EXW, FOB. Generally, 30% T/T deposit, and balance 70% T/T balance before delivery.

Q6: What is your MOQ?

A: For the products available, we accept any quantity. If out of stock, we need MOQ. Please contact for more details.

Q7: Can you develop new items according to the samples?

A: Yes, we can help to develop new item by your samples.

Q8: What is your sample policy?

A: We can supply sample if available, but customers need to pay the freight cost.

Quality Control

Material Verification: Ensures metal brackets meet strength and corrosion-resistance standards.
Damping Element Testing: Confirms proper elasticity and fluid integrity (where applicable).
Dimensional Accuracy: Verified against OE specifications for precise fit.
Visual Inspection: 100% checked for cracks, defects, or manufacturing imperfections.
Packaged Safely: Protected to prevent damage during transit.

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 Rocker Arm Shaft Assembly WDL11-028 For Isuzu NPR59 4BD1 8-94129551-0 Truck Parts, please contact our sales team for a competitive quote and expert technical support.