Product Overview

This B31 Common Rail Fuel Injector Adjustable Shim is a precision-engineered component designed for the repair and maintenance of diesel fuel injection systems. Sourced from a reliable manufacturer in Shandong, China, this high-quality washer/shim is essential for restoring injector performance and ensuring proper fuel metering. We offer global shipping to major industrial markets, including North America, Europe, Southeast Asia, and the Middle East, providing a cost-effective solution for B2B buyers and workshops worldwide.

Key Features & Benefits

• Precision Adjustment: Allows for precise calibration of injector opening pressure, optimizing engine performance and fuel efficiency.
• High-Quality Material: Manufactured from durable materials to withstand extreme pressures and temperatures within the common rail system.
• Reliable Repair Solution: An essential component for professional injector rebuilding, helping to extend the service life of the fuel system.
• Lightweight Design: Weighing only 0.002kg, it offers easy handling and precise fitment during the assembly process.
• Cost-Effective: A low-cost, high-impact part for maintenance, reducing the need for complete injector replacement.

Technical Specifications

OEM Cross-Reference

This adjustable shim is identified by the part number B31. It is a standard replacement shim used in various common rail injector assemblies. Please verify your injector model to ensure compatibility. For cross-referencing, consult your injector service manual or technical datasheet for the required shim thickness.

Compatibility

• Engine Type: Diesel Engines (Common Rail Systems)
• Application: Diesel Cars and Light Commercial Vehicles
• System: Common Rail Fuel Injection Systems
• Note: This shim is a universal service part for injectors that use adjustable shims for calibration. Always measure the required thickness for your specific injector.

Global Supply & Distribution

• Worldwide Shipping: We offer reliable shipping solutions to all major global destinations.
• Major Markets: Our products are regularly exported to North America, Europe, Southeast Asia, the Middle East, Africa, and Oceania.
• Fast Delivery: Efficient logistics ensure timely delivery to major ports and industrial centers, minimizing downtime for your operations.
• B2B Focus: We specialize in serving workshops, parts distributors, and fleet maintenance operations with bulk orders and professional service.

Quality Assurance

• Manufacturing Standards: Produced in a quality-controlled facility in Shandong, China, adhering to industry standards for precision parts.
• Warranty: Each shim is backed by a 4-month warranty against manufacturing defects.
• Testing: Parts are inspected for dimensional accuracy and material integrity to ensure reliable performance in demanding diesel applications.

FAQ

Q1: How do I determine the correct thickness of the B31 shim for my injector?

The correct shim thickness is critical for achieving the proper injector opening pressure. You must measure the old shim with a micrometer or consult your injector’s service manual for the specified thickness range. The “B31” designation is a general part number; the actual thickness may vary. Always confirm the physical dimensions before installation.

Q2: Can this shim be used in any common rail diesel injector?

While this shim is a standard component for many common rail injectors, it is not universal. It is designed for injectors that use a flat washer/shim for adjusting the spring preload. Verify the shape, outer diameter (OD), and inner diameter (ID) against your original part to ensure a proper fit.

Q3: What is the recommended procedure for installing a new adjustable shim?

Installation should be performed in a clean environment to prevent contamination. Carefully disassemble the injector, remove the old shim, and replace it with the new one of the correct thickness. After reassembly, the injector’s opening pressure must be tested on a calibrated test bench to ensure it meets the manufacturer’s specifications. Incorrect installation can lead to engine performance issues or injector damage.

Our advantages

1.An authorized wholesaler of Isuzu genuine parts, Hino genuine parts, Mitsubishi genuine parts and Mahle parts.

2. We are not only supply genuine parts, but also high quality OEM parts, which are made in China or made in Japan.

3. More than 10 years of experience in machinery parts, professional supply of diesel engine parts.

4. Fast delivery, the fastest can be shipped in one day ,more than 500,000 of different types parts in stock.

5. Scientific ERP system, easy and fast to locate the parts that customer needs.

6. Professional technician checks the parts before delivery, to make sure the parts are correct, usable and defect-free.

Exhibition

Packing&Shipping

1.  Our shipment is by air/sea/express (DHL/FEDEX/TNT/UPS/EMS).

2.  Once we get confirmation of payment, we will ship products in 2 days.

3.  Our packaging is standard export wooden box or others as your requirement.

4. We’ll check and test the products before shipping , and givethe pictures to our customers to confirm.

FAQ

Q1. What is your company major products?

A: Our main products are Liner kit, Piston, Rings, Liner, Gasket kit, Bearing, Injection pump, Nozzle, Water pump, Oil pump,Crankshaft, Turbocharger,Filter, etc.

Q2.What is the MOQ?

A: Normally we can supply any quantity if we have in stock.

Q3. What is your payment term ?

A: We accept Western Union, T/T, Paypal.

Q4. What is the packing ?

A: Carton or wooden case , If you want to put your logo on the packing , We will do it after get your authorization letter.

Q5. When can you deliver products after payment ?

A: By Express ,usually might take 3-4 days ;By Air , Usually take 7-9 days ; By Sea ,usually take 1-2 months .

Q6. What can you do to complete order perfectly ?

A: In the beginning , We will communicate with clients in details to understand what they need .

Before packing , We will check the products and send photos to clients .After confirmation ,

We will packing products well to avoid damage . Once we get tracking number ,

We will send it to customer and keep contact in with clients .