Product Introduction

• Structure: Integrated assembly of high-strength 40Cr alloy steel shaft, precision-forged dual shift forks (for 3/4 gear and reverse gear), and detent positioning mechanism. The shaft is induction-hardened and ground for wear resistance; fork surfaces are precision-machined for precise synchronizer sleeve engagement.

• Performance: Hardened shaft withstands frequent shifting impacts and torsion; dual-fork design ensures accurate actuation of both 3/4 gear and reverse synchronizers; detent mechanism provides stable gear positioning, eliminating gear clash.

Core Function

1. Dual Gear Actuation: Transfers selector force to slide both 3/4 gear and reverse gear synchronizer sleeves, enabling engagement of 3rd, 4th, or reverse gear.

2. Precise Position Locking: Detent mechanism locks the shaft in the selected gear position, preventing accidental disengagement during heavy load or vibration.

3. Smooth Engagement: Ensures accurate alignment between forks and synchronizer sleeves, eliminating gear clash and reducing component wear.

C-R Gear Shift Fork Shaft WG2212220001 – SINOTRUK HW Series Gearbox Parts

When your SINOTRUK HW series gearbox demands a reliable high-low range shift, everything depends on one critical component — the C-R Gear Shift Fork Shaft WG2212220001. This precision-machined fork shaft ensures smooth and accurate gear engagement between high and low ranges, keeping heavy-duty trucks running efficiently across thousands of kilometers. As a factory-direct supplier, Mettlead delivers this genuine-spec gearbox part to wholesale distributors worldwide at competitive pricing — so you can grow your margins while your customers keep their fleets on the road.

Why Choose the C-R Gear Shift Fork Shaft WG2212220001?

The gear shift fork shaft is the backbone of the range-shifting mechanism inside the SINOTRUK HW transmission. It translates the driver’s shift command into precise mechanical movement, guiding the fork to lock gears securely into position. A worn or substandard fork shaft leads to hard shifting, gear pop-out, and eventually costly transmission failure. That’s why quality matters here more than almost anywhere else in the drivetrain.

Key Features and Benefits

• OEM-Equivalent Precision: Manufactured to match the original SINOTRUK specifications for dimensions, surface hardness, and tolerance — ensuring drop-in fitment with no modifications required.
• Superior Material Strength: Forged from high-grade alloy steel with heat treatment, this fork shaft resists bending, wear, and fatigue even under extreme shifting loads.
• Smooth Shift Performance: The precision-ground surface finish minimizes friction inside the gearbox housing, promoting effortless high-low range transitions.
• Extended Service Life: Strict quality control during manufacturing ensures consistent hardness and dimensional accuracy — reducing premature failure and warranty claims for your customers.
• Wholesale-Ready Pricing: Factory-direct supply from China eliminates middlemen, giving you healthier profit margins on every unit sold.

Application and Compatibility

The C-R Gear Shift Fork Shaft WG2212220001 is specifically designed for the SINOTRUK HW series gearbox, one of the most widely deployed heavy-duty transmissions across Africa, Southeast Asia, the Middle East, and South America. This fork shaft controls the high-low range shifting mechanism within the auxiliary section of the gearbox, making it essential for vehicles operating under demanding load and terrain conditions.

Applicable Models

• SINOTRUK HOWO A7 heavy-duty trucks equipped with HW19710 / HW19712 transmissions
• SINOTRUK HOWO 6×4 and 8×4 tractor heads and dump trucks
• SITRAK C7H series with HW series gearbox configurations
• Other heavy trucks utilizing the SINOTRUK HW range-shift transmission platform

Looking for more compatible gearbox components? Browse our full catalog of gearbox parts or explore our dedicated SINOTRUK HOWO gearbox parts collection.

Technical Specifications

OEM/ODM Capability and Custom Packaging

At Mettlead, we understand that distributors and agents have unique branding needs. That’s exactly why we offer flexible OEM and ODM services for the C-R Gear Shift Fork Shaft WG2212220001 and our entire range of SINOTRUK gearbox components.

• White-Label Packaging: Ship products under your own brand name with customized boxes, labels, and documentation — building your brand recognition in your local market.
• Custom Packaging Solutions: Whether you need bulk palletized shipping or individual retail-ready boxes, we adapt packaging to your distribution model.
• Strict Quality Control: Every batch undergoes dimensional inspection, hardness testing, and surface finish verification before shipment. We maintain traceability records so you can confidently back your warranty claims.
• Factory Visit Welcome: We invite partners to visit our facilities in China to inspect production processes, quality systems, and inventory capabilities firsthand.

Explore our complete range of SINOTRUK HOWO truck parts to see what else we can supply for your customers.

Customer Case Study: Scaling Gearbox Parts Sales in East Africa

One of our long-standing distribution partners in Kenya had been sourcing SINOTRUK HW series gearbox parts from multiple intermediaries, facing inconsistent quality and unpredictable lead times. After connecting with Mettlead, they consolidated their procurement of the C-R Gear Shift Fork Shaft WG2212220001 along with synchronizer rings, shift forks, and output shafts under a single supply chain.

Within six months, their return rate dropped by over 40%, and they reported noticeably smoother shifting performance feedback from fleet operators. Moreover, our white-label packaging helped them establish stronger brand presence across their dealer network. Today, they order container loads quarterly and have expanded into neighboring markets — all built on the reliability of Mettlead’s quality-controlled SINOTRUK gearbox parts.

Frequently Asked Questions

What exactly does the C-R Gear Shift Fork Shaft WG2212220001 do inside the gearbox?

This fork shaft acts as the guiding rod for the range-shift fork within the SINOTRUK HW series transmission. When the driver selects high or low range, the pneumatic actuator pushes the fork along this shaft to engage or disengage the range gear set. Without a straight, properly hardened shaft, the fork cannot travel smoothly — resulting in hard shifts or incomplete engagement.

How can I tell if the C-R gear shift fork shaft needs replacement?

Common symptoms of a worn fork shaft include difficulty shifting between high and low range, grinding noise during range transitions, and gear pop-out under load. Physical inspection may reveal scoring, pitting, or measurable wear on the shaft surface. If the shaft shows any signs of bending — even slight — it must be replaced immediately to avoid damaging the shift fork and housing bore.

Is this fork shaft WG2212220001 compatible with all SINOTRUK HW gearbox variants?

Yes, the WG2212220001 is designed for the HW series platform, which includes the HW19710, HW19712, and related variants used across HOWO A7, SITRAK, and other SINOTRUK heavy-duty models. However, if you are working with an older or modified transmission, we recommend confirming the part number against your gearbox nameplate before ordering.

What is the minimum order quantity for wholesale pricing?

MOQ varies depending on whether you need standard or custom-packaged units. For distributors ordering the C-R Gear Shift Fork Shaft WG2212220001 in bulk, we offer tiered pricing that rewards larger commitments. Please contact us with your target quantity for a personalized quote.

How does Mettlead ensure the quality of this gearbox part?

Every C-R Gear Shift Fork Shaft WG2212220001 goes through a multi-stage inspection process: raw material certification, post-forging dimensional check, heat treatment verification via hardness testing, and final surface finish inspection. We maintain batch-level traceability, so if any issue arises in the field, we can trace it back to the production run and resolve it quickly.

Ready to Boost Your Gearbox Parts Inventory?

Whether you need 50 pieces or a full container of C-R Gear Shift Fork Shaft WG2212220001 parts for your SINOTRUK aftermarket business, Mettlead is your factory-direct partner for quality, price, and reliability. We ship globally with flexible payment options and support you with technical documentation every step of the way.

Take the next step today: Contact us now to request your wholesale quotation, ask about custom packaging, or schedule a factory visit. Let’s build a profitable partnership together.