Basic Info

• OE Part No.: 1358 334 037

• Alternative OEM Codes: ZF 1358 334 018; Iveco 42582479 / 42579003; Eurotec 95008454

• Product Type: Auxiliary Box Range Shift Air Cylinder Piston / Splitter Pneumatic Piston

• Brand: ZF OEM Matching Replacement Spare Parts

• Compatible Gearbox: ZF 12TRAXON 12TX2420 / 12TX2620 / 12TX2820 AMT 12-speed heavy truck transmission

• Applicable Vehicles: Sinotruk Sitrak, FAW J7, MAN TGX, DAF XF, Iveco Stralis heavy-duty tractors

• Material: High-strength nodular cast iron, surface passivation anti-rust treatment

• Net Weight: approx 0.14kg (reference value)

• Matching Components: Range cylinder housing, NBR sealing O-rings, shift push rod, return compression spring

• Function: Bear compressed air thrust, generate linear displacement to drive auxiliary box range shift fork, switch low-speed and high-speed gear ranges

• Category: Heavy Truck ZF 12TRAXON AMT Transmission Auxiliary Box Pneumatic Shift System Repair Spare Parts

Material & Advantages

1. High-density nodular cast iron blank with high surface hardness, anti-scuffing and wear-resistant under long-term reciprocating sliding inside cylinder bore

2. Double integrated precision sealing grooves, perfectly fit standard rubber O-rings to thoroughly isolate air leakage between front and rear air chambers

3. Strict OEM outer diameter, overall length and central hole dimension, no reaming or polishing modification required during overhaul, direct press-fit assembly

4. Super-finished outer circular surface greatly reduces friction resistance with cylinder inner wall, improves range shift response speed and lowers air pressure loss

5. Optimized arc stress structure to avoid piston deformation under long-term high air pressure impact

6. Adapt to long-distance highway logistics transportation, mountain heavy climbing and high-frequency high-low range switching working conditions

Application Scenarios

• Replace worn, sealing groove damaged, air-leaking original range cylinder piston marked 1358 334 037 for ZF 12TRAXON gearbox

• Fix transmission faults including delayed high-low range switching, inability to shift speed ranges, abnormal air consumption and grinding noise during range change

• Complete auxiliary box pneumatic cylinder disassembly overhaul and regular maintenance for logistics heavy truck fleets

• Assemble matched sealing rings, return spring and cylinder housing following official ZF assembly operation standards

Supply & After-sale

• MOQ: 1 piece

• Warranty: 3–6 months (exclude improper press installation, contaminated compressed air, overload operation and natural abrasion aging)

• Packaging: Independent shockproof foam + thick carton sealed packaging to prevent piston outer surface scratch and extrusion deformation

• Remarks: Confirm gearbox model 12TRAXON 12TX series before order placement to guarantee matching accuracy

Gearboxes assembly include brand ZF, Eaton, FAST, Allison, DONGFENG, DC, Benz, volvo, HOWO, WLY etc. Gearboxes parts includegear, synchronizer, PTO, housing, bearings, shaft, top cover, sensors, wireness, repair kits... etc.

Our products have been exported to more than 50 countries and regions such as Korea, Chile, Russia, Kazakhstan, USA, Ecuador, Turkey, Iran, Africa, Latin America, etc., and have been unanimously recognized by customers.

In the future, we will be committed to creating higher-end quality and more intimate service. And a more comfortable customer experience to build Yongliwei company into an auto parts supplier with excellent corporate culture, scientific development concept and continuous innovation ability.

Shiyan Yongliwei Industry and Trading Co., Ltd. is a modern enterprise integrating design, development, production and sales of gearbox assembly and gearbox parts.

Our company was founded in Hubei province, China, and has been specialized the truck gearboxes in Chinese offline market for 21 years .Our parts are the leader of gearboxes area in the China now.

Our company was set up in the largest truck parts production base in the world –Shiyan city, Hubei, China, to meet the demand for products in the Asia and South American markets, a professional international trade sales team was born in Hubei in 2021.

Shiyan Yongliwei is focusing on creating high quality, high technology and high standard gearboxes and its parts.

* 8000 square meters of large warehouse.

* A number of maritime, land, air transport international logistics companies work closely together.

* To provide you with convenient, fast and low-cost e-commerce one-stop service.