Product Introduction

• Structure: A precision-machined solid steel spacer, made from high-strength alloy steel with a hardened surface treatment. It features a flat, parallel surface finish with tight dimensional tolerances, ensuring uniform thickness and concentricity. The surface is black-oxide coated for corrosion resistance.

• Performance: The hardened steel construction maintains precise dimensional stability under high axial loads, preventing deformation or wear. The flat, parallel surfaces ensure even load distribution, reducing stress on adjacent components like gears and bearings. The black-oxide coating resists rust and corrosion in harsh operating environments.

Core Function

1. Axial Positioning: Maintains precise spacing between gears, bearings, and other rotating components, ensuring proper alignment and preventing axial movement that could cause gear clash or bearing damage.

2. Load Distribution: Distributes axial forces evenly across the mating surfaces, reducing stress concentrations and extending the service life of gears and bearings.

3. Dimensional Stability: The hardened steel construction resists deformation under high loads, maintaining critical spacing tolerances over the life of the component.

Washer MQ6151142119 Sinotruk Sitrak – Precision Shift Fork Adjustment Shim for MCY11 Axle

When your Sitrak truck’s transmission demands flawless shifting precision, every single micron counts. The Washer MQ6151142119 is a genuine-spec adjustment shim engineered specifically for Sinotruk Sitrak heavy-duty trucks. It plays a quiet but critical role inside the gearbox, ensuring your shift fork maintains optimal clearance and eliminates play that leads to premature wear. Sourced directly from Mettlead’s quality-controlled supply chain in China, this shim delivers OEM-level fitment at a factory-direct price — so you keep your fleet rolling without overpaying for precision.

Why This Washer MQ6151142119 Matters for Your Sitrak Truck

A shift fork adjustment washer might seem like a small component, but it shoulders a big responsibility. Here’s what the MQ6151142119 washer does for your drivetrain — and for your bottom line:

• Maintains Precise Gear Engagement: This shim compensates for manufacturing tolerances inside the gearbox housing, ensuring the shift fork sits at exactly the right position for smooth, reliable gear changes.
• Reduces Transmission Wear: Without the correct adjustment washer, excess play accelerates wear on synchronizers, fork pads, and sliding sleeves. A properly specced shim extends the life of far more expensive components.
• OEM-Grade Dimensional Accuracy: Manufactured to match the original Sinotruk specification, so you avoid the guesswork and risk that come with generic shims.
• Direct-Fit for MCY11 Axle Assembly: Designed to integrate seamlessly with the MCY11 axle-mounted gearbox configuration found across the Sitrak C7H and G7 series.
• Cost-Effective Maintenance: A low-cost part that prevents high-cost failures — the definition of smart fleet management.

Technical Specifications – Washer MQ6151142119

Application Scenario – Where Does the MQ6151142119 Washer Fit?

Understanding exactly where this part lives inside your truck helps you order with confidence. The Washer MQ6151142119 is installed as a shift fork adjustment shim within the transmission assembly of Sinotruk Sitrak heavy-duty trucks. More specifically:

• Applicable Truck Platform: Sinotruk Sitrak  series heavy-duty commercial vehicles
• Axle Fitment: MCY11 drive axle configuration
• Functional Position: Transmission shift fork adjustment — used to set the correct axial position of the fork, ensuring it aligns perfectly with the synchronizer sleeve travel

Whenever a gearbox is rebuilt, inspected, or when shift quality degrades, technicians check and replace these adjustment washers to restore factory-spec clearances. Having the correct MQ6151142119 shim on hand means less downtime and faster turnaround for your maintenance team.

OEM / ODM Capability & Custom Packaging

At Mettlead, we understand that distributors and fleet operators have different branding and packaging needs. That’s why we offer flexible options for the Washer MQ6151142119 and all our Sitrak parts:

• White-Label Packaging: Receive parts in neutral boxes, ready for your own labeling system.
• Custom Branded Packaging: We can package parts under your brand identity for resale — minimum order quantities apply.
• Strict Quality Control: Every batch undergoes dimensional inspection and material verification before shipment.
• Bulk & Mixed Orders: Combine this washer with other Sitrak heavy-duty parts in a single consolidated shipment to reduce logistics costs.

Whether you need 100 pieces or 10,000, our factory-direct model keeps your landed cost competitive across Africa, the Middle East, Southeast Asia, and Central Asia.

Frequently Asked Questions – Washer MQ6151142119 Sinotruk Sitrak

What is the function of Washer MQ6151142119 in a Sitrak gearbox?

This washer serves as a precision adjustment shim for the transmission shift fork. It sets the correct axial clearance between the fork and its housing bore, which directly affects how smoothly and accurately gears engage. If the clearance is too large, you’ll notice sloppy shifting; too tight, and the fork binds. The MQ6151142119 shim keeps things in the sweet spot.

Which truck models use the MQ6151142119 adjustment washer?

The MQ6151142119 is designed for Sinotruk Sitrak trucks equipped with the MCY11 drive axle. This primarily includes the Sitrak C7H and G7 heavy-duty truck series. Always cross-reference with your vehicle’s assembly parts catalog to confirm fitment for your specific chassis number.

How do I know if my shift fork adjustment washer needs replacing?

Common signs include difficulty engaging gears, grinding during shifts, or excessive free play at the gear lever. During a gearbox overhaul, technicians typically measure fork clearance with a feeler gauge — if it exceeds the service limit specified in the Sitrak workshop manual, the MQ6151142119 washer should be replaced.

Is this washer sold individually or in sets?

The MQ6151142119 washer is sold per piece. However, because different transmission positions may require shims of different thicknesses, we recommend consulting your parts manual to confirm exactly how many pieces (and which thickness grades) your specific rebuild requires. Mettlead can supply full shim kits upon request.

What material is the MQ6151142119 washer made from?

It’s manufactured from hardened steel with a precision-ground surface finish, matching the OEM material specification. An anti-corrosion coating protects it during storage and shipping. This ensures consistent dimensional stability and long service life under the thermal and mechanical stresses inside a heavy-duty gearbox.

Can I order this part with other Sinotruk Sitrak components?

Absolutely. Mettlead stocks a comprehensive catalog of Sinotruk Sitrak truck parts — from engine and transmission components to axle, suspension, and cabin parts. Combining orders in one shipment is one of the easiest ways to reduce per-unit freight cost.

Get Your Quote for Washer MQ6151142119 – Factory Direct Pricing

Ready to secure competitive pricing on the MQ6151142119 shift fork adjustment washer for your Sitrak fleet or distribution inventory? Mettlead offers factory-direct pricing, fast lead times, and flexible payment terms built for international B2B buyers.

Simply tell us your required quantity, preferred packaging format, and delivery destination — our team will respond with a detailed quote within 24 hours.

Contact us now to request pricing, confirm fitment, or discuss a bulk order for your next shipment.