Auxiliary box drive gear

12JSDX240TA-1707030 Auxiliary Box Drive Gear — OEM Replacement for Fast Transmission

100% brand new original replacement gear. Designed for heavy-duty truck gearbox auxiliary box (Fast Transmission). Part number 12JSDX240TA-1707030, precision-forged from high-grade alloy steel with heat treatment to resist high impact, fatigue, and heavy-duty wear. Manufactured to exact OEM gear specs for lower friction, minimal noise, and prevention of gear slipping during high-torque transfers. Compatible with SINOTRUK, SHACMAN, FAW, FOTON and other heavy-duty trucks. Direct OEM fitment with internal spline fit for seamless alignment — reducing installation time and fleet downtime. In stock and ready for prompt global delivery.

High-Strength Alloy Steel

Forged with premium alloy material and precision heat-treated to resist high impact, fatigue, and heavy-duty wear.

Precision Tooth Profile

Manufactured to exact OEM gear specs to lower friction, minimize noise, and prevent gear slipping during high-torque transfers.

Cost-Effective Replacement

Extends the service life of the transmission assembly, lowering overall maintenance and overhaul costs.

Heavy-Duty Truck Maintenance

Essential replacement component for repair shops and fleet service centers fixing Fast gearbox high/low range switching issues.

Established in 2005, Shandong Chengda Auto Sale Co., Ltd. is a qualified manufacturer of various trailers and heavy truck parts supplier. With high-standard machinery and automatic equipment, a powerful R&D team, and an elite sales team, we have built long-term business relationships with many world-famous enterprises such as SINOTRUK, SHACMAN, FAW, DFAC, XUGONG Group, LIUGONG Group, SEM Group, etc. Besides mature after-sale systems, we can meet the different needs of customers at both homes.

1. Who are we?

Based in Shandong, China, since 2017. We sell to Africa (60%), Southeast Asia (20%), South Asia (10%), South America (5%), Oceania (3%), Middle East (2%). 101-200 employees.

2. How do we guarantee quality?

Pre-production sample before mass production; final inspection before every shipment.

5. What services can we provide?

Delivery: FOB, CFR, CIF, EXW. Payment: T/T, L/C, MoneyGram, Credit Card, PayPal, Western Union, Cash. Languages: English, Chinese, Spanish, Portuguese, Arabic, French.