Basic Info

• OE Part No.: 1316 332 031

• Cross Reference OE: Eurotec 95006225, AM GEARS 72545, Euroricambi 95534457

• Tooth Count: 28 helical teeth

• Product Type: Auxiliary Box Planetary Pinion / Planet Gear

• Brand: ZF OEM Matching Heavy-Duty Replacement Spare Parts

• Compatible Gearbox: ZF 16S151NMV, 16S1930, 16S2230, 16S2530, 16S2531 Ecosplit4 16-speed manual heavy truck transmission

• Applicable Vehicles: Sinotruk Sitrak/Howo, FAW J6P/J7, MAN TGS/TGX, DAF CF/XF, Iveco Stralis heavy haul tractors

• Material: 20CrMnTi alloy steel, overall carburizing quenching + tooth surface superfinishing

• Net Weight: approx 1.25kg (reference value)

• Matching Components: Planet carrier 1316 232 039, planet shaft, reduction ring gear, thrust washer

• Function: Mesh with sun gear and ring gear to realize auxiliary box low-speed planetary reduction, increase output torque for heavy-load climbing

• Category: Heavy Truck ZF 16S Series 16-Speed Transmission Auxiliary Box Reduction System Repair Spare Parts

Material & Advantages

1. Premium 20CrMnTi carburized alloy steel, full tooth surface hardening, high contact fatigue resistance, anti-pitting and anti-tooth breakage under long heavy torque load

2. Precision helical tooth design, smooth meshing, low vibration and low grinding noise during reduction operation

3. Standard inner bore, tooth module and outer diameter consistent with OEM, direct assembly without reaming or grinding modification during gearbox overhaul

4. Optimized tooth root transition arc to reduce stress concentration, greatly lower tooth fracture risk under mountain full-load climbing

5. Uniform oil storage grooves on tooth surface to form stable lubricating oil film, avoid dry grinding and early abrasion

6. Adapt to long-distance full-load highway logistics, mountain heavy climbing and frequent low-range heavy transport working conditions

Application Scenarios

• Replace pitted, tooth-broken, inner bore worn original planetary gear marked 1316 332 031 for ZF 16-speed Ecosplit4 gearbox

• Fix transmission faults including persistent auxiliary box grinding noise, insufficient low-speed torque, failure to engage low gear range and power loss during climbing

• Complete auxiliary box planetary reduction assembly disassembly overhaul and scheduled maintenance for fleets equipped with ZF 16-speed manual gearbox

• Assemble matched planet carrier, planet shaft and reduction ring gear following official ZF auxiliary box assembly standards; recommend replacing 3 pcs planetary gears as a full set during overhaul

Supply & After-sale

• MOQ: 1 piece

• Warranty: 3–6 months (exclude contaminated transmission oil, overload heavy hauling, improper assembly and natural abrasion aging)

• Packaging: Independent shockproof foam + thick carton sealed packaging to protect tooth surface from scratch and collision damage

• Remarks: Confirm gearbox model ZF 16S Ecosplit4 series before order placement; each planetary carrier needs 3 pieces of 1316 332 031 planetary gears for complete matching

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.