Shacman Truck Spare Parts factory - Sinotruk HOWO Truck Parts manufacturer from China

Quality Shacman Truck Spare Parts & Sinotruk HOWO Truck Parts factory

SINOTRUK HOWO HW25712XSTL 12-Speed Manual Sync Gearbox: A Practical Choice for Heavy-Duty Transmission Replacement For heavy-duty truck operators, the transmission is one of the components that has the greatest impact on daily vehicle operation. A truck may still be able to move when minor components require maintenance, but once the gearbox develops serious internal damage or shifting problems, the vehicle can be taken out of service completely. For this reason, fleet operators, repair workshops and truck parts distributors often search directly by gearbox model when sourcing a replacement. HW25712XSTL gearbox, HOWO 12-speed transmission assembly, and SINOTRUK manual synchronized gearbox are typical search terms used by buyers seeking a complete heavy-duty transmission solution. The SINOTRUK HOWO HW25712XSTL 12-Speed Manual Sync Gearbox Transmission Assembly is designed for heavy-duty vehicle applications requiring reliable torque transmission, multiple gear ratios and synchronized shifting performance. It is suitable for replacement, transmission overhaul projects and international aftermarket supply where correct model identification and technical compatibility are essential. Why Gearbox Model Identification Matters Before Purchasing A transmission assembly is not a universal truck part. Two gearboxes may look similar externally but differ in torque capacity, gear configuration, housing design, output connection or auxiliary equipment. For this reason, professional buyers normally confirm several points before placing an order: Gearbox model number Truck model and chassis information Engine power range Transmission housing configuration PTO requirements Retarder requirements Input and output connection details The HW25712XSTL designation provides important information about the transmission configuration. It belongs to the heavy-duty synchronized manual gearbox range and uses a 12-forward-speed arrangement. According to published model specifications, the HW25712XSTL is rated for up to 2500 N·m maximum input torque, with a dry weight of approximately 325 kg for the aluminum housing version and an overall length of approximately 993 mm. These specifications make it important for buyers to verify the complete vehicle configuration rather than selecting a gearbox based only on appearance. 12-Speed Configuration for Different Heavy-Duty Operating Conditions Heavy trucks operate under very different road and load conditions. A vehicle carrying cargo on highways requires different gear selection from a truck climbing steep roads or operating under high load. The 12-speed configuration gives drivers a broader selection of gear ratios across different operating conditions. This can help provide more appropriate gear selection during: Long-distance freight transportation Heavy-load logistics Mountain and downhill routes Regional distribution Construction-related transportation Mixed road conditions For commercial truck fleets, gearbox selection is not simply about the number of gears. The transmission must also match the engine's torque characteristics and the vehicle's intended working conditions. Synchronized Shifting for Heavy-Duty Manual Transmission Applications The HW25712XSTL is part of the synchronized manual gearbox range. The synchronizer mechanism is designed to support smoother gear engagement during normal operation. This is particularly relevant for trucks that operate for long hours and make frequent gear changes. A heavy-duty gearbox must handle continuous torque transfer while maintaining reliable internal gear engagement. The transmission design of this series combines a heavy-duty gear structure with a synchronized shifting arrangement intended for commercial vehicle applications. Published specifications for the model also identify a dual intermediate shaft structure and helical gear design within the transmission configuration. For buyers sourcing a replacement transmission, confirming the exact gearbox model remains more important than simply searching for a general "12-speed HOWO gearbox." Technical Overview of HW25712XSTL Gearbox Item Specification Product Name Manual Sync Gearbox Transmission Assembly Gearbox Model HW25712XSTL Truck Brand SINOTRUK HOWO Transmission Type Heavy-Duty Manual Synchronized Transmission Forward Gears 12-Speed Maximum Input Torque Up to 2500 N·m Maximum Input Speed Up to 2600 RPM Approx. Dry Weight 325 kg, depending on configuration Overall Length Approx. 993 mm System Truck Drivetrain / Transmission System Optional Configuration PTO and retarder configurations may vary Technical details should always be confirmed against the truck VIN, transmission identification plate and actual vehicle configuration before purchase. Published model specifications show that weight, oil capacity and overall length can vary depending on housing material and whether auxiliary equipment such as a retarder is installed. When Should a Complete Gearbox Assembly Be Considered? In some cases, a transmission can be repaired by replacing individual internal components. However, a complete transmission assembly may be considered when the gearbox requires extensive overhaul or when multiple major components have been affected. Typical situations include: Severe internal gear damage Multiple bearing and shaft issues Extensive gearbox overhaul requirements Long vehicle downtime during repair Fleet maintenance projects requiring complete replacement International buyers sourcing complete transmission assemblies for stock For distributors and workshops, a complete gearbox assembly can also simplify procurement compared with sourcing multiple internal transmission components separately. Important Checks Before Installing a Replacement Gearbox Before installing a heavy-duty transmission assembly, technicians should confirm compatibility with the vehicle. Recommended checks include: 1. Confirm the Exact Gearbox Model Always compare the transmission identification information with the replacement unit. 2. Check the Engine and Transmission Connection The input connection must match the existing engine and clutch system. 3. Confirm PTO or Retarder Requirements Some heavy-duty truck applications use additional equipment connected to the transmission. Buyers should confirm these requirements before ordering. 4. Inspect External Connections Check the output flange, shift system, air connections and sensors before installation. 5. Use the Correct Transmission Lubricant The gearbox should be filled and maintained according to the applicable technical requirements for the specific transmission version. A properly matched gearbox is essential for installation efficiency and long-term operation. A Suitable Product for International Heavy Truck Parts Buyers The global market for Chinese heavy-duty truck parts continues to include fleet operators, repair companies, distributors and importers who maintain HOWO vehicles in different regions. For these buyers, sourcing a complete transmission assembly requires more than comparing prices. Important purchasing factors usually include: Correct model identification Clear product photos Technical specification confirmation Packaging suitable for international transportation Availability of related transmission parts Professional communication before shipment For a complete gearbox assembly such as the HW25712XSTL, confirming the vehicle configuration before shipment can reduce the risk of purchasing the wrong transmission version. Looking for a SINOTRUK HOWO HW25712XSTL Gearbox? If you are sourcing a SINOTRUK HOWO HW25712XSTL 12-speed manual sync gearbox transmission assembly, please provide the following information when sending an inquiry: Truck model Gearbox nameplate photo VIN or chassis information, if available Engine model PTO requirement Retarder requirement Quantity required Destination country This information helps confirm the appropriate transmission configuration before delivery. In addition to complete transmission assemblies, related products may include gearbox internal components, synchronizer parts, shafts, gears, bearings, shift components, PTO-related parts and other heavy-duty truck drivetrain components. For distributors, repair workshops and fleet maintenance companies, accurate part matching is the first step toward a successful transmission replacement project. Frequently Asked Questions About HW25712XSTL Gearbox Q1: What is the HW25712XSTL gearbox? HW25712XSTL is a heavy-duty manual synchronized gearbox model with 12 forward speeds, used in compatible heavy-duty vehicle applications. Q2: Is HW25712XSTL suitable for SINOTRUK HOWO trucks? It is associated with the SINOTRUK heavy-duty transmission range. Buyers should still confirm the exact truck configuration and gearbox identification before ordering. Q3: How many gears does the HW25712XSTL transmission have? The model is configured as a 12-speed manual gearbox. Q4: What is the maximum input torque? Published specifications list a maximum input torque of up to 2500 N·m for the HW25712XSTL model. Q5: How much does the gearbox weigh? The aluminum housing version is listed at approximately 325 kg dry weight. Other housing configurations can have different weights. Q6: Can the gearbox be supplied with PTO or a retarder configuration? The gearbox series supports various auxiliary configurations. The exact requirement should be confirmed before purchasing because dimensions and specifications may vary. Q7: What information should I provide before ordering? The gearbox nameplate photo, truck model, engine model and existing transmission configuration are recommended for accurate matching. Contact Our International Sales Division Inquiry Email: alessa@trucks-spares.com WhatsApp / 24/7 Hotline: 86 17702932622 Wechat:+86 17702932622 Whatsapp:86 17702932622 Facebook:Pengfei Yang

How TransAfrika Logistics Solved Its Spare Parts Nightmare The Guy on the Other End of the Phone Emeka Okafor doesn't have time for sales pitches. As procurement director at TransAfrika Logistics in Lagos, he manages parts supply for 127 heavy trucks—Shacman F3000 and M3000, Sinotruk HOWO 371 and 420, FAW J6P, and Dongfeng Tianlong KL. These trucks haul containerized cargo, cement, and petroleum products daily between Lagos, Abuja, Kano, and across borders into Cotonou and Accra. When one of them sits idle in the yard waiting for a brake chamber or a clutch release bearing, TransAfrika bleeds roughly $280 per truck per day in lost revenue. We first spoke to Emeka in August 2023. He'd just lost three days trying to source a WP10 crankshaft position sensor for a Shacman F3000 that had been parked at a roadside workshop outside Ibadan. The local supplier in Lagos charged him ₦185,000 (roughly $240 at the time), claimed it was genuine OEM, and the part lasted 11 days before it failed again. "I'm tired," he said on that first call. "I don't know who to trust anymore. Everybody says OEM. You open the box, it looks the part, six weeks later you're back to square one." What Was Actually Happening on the Ground ️ Real Incident – November 2022: TransAfrika ordered 24 sets of brake linings for their HOWO fleet through a Dubai-based trader. Within eight weeks, six trucks reported brake fade on the Lagos-Ibadan expressway—a 130 km corridor with heavy traffic and frequent emergency stops. Inspection revealed the friction material had delaminated from the backing plate. The trader refused warranty, claiming "improper installation." TransAfrika lost an estimated $18,000 in towing, replacement labor, and vehicle downtime. Emeka still keeps one of those failed linings on his desk as a reminder. This wasn't an isolated problem. After auditing 18 months of procurement records with us, here's what we found: Counterfeit rate: Of 312 "OEM" parts purchased locally in 2022–2023, 127 failed within 90 days. That's a 40.7% early failure rate. The worst categories: brake system components (54% failure), fuel injection parts (47%), and suspension bushings (38%). Price chaos: The same WP12 fuel injector assembly was invoiced at $187 in March 2023 and $298 in June 2023—same supplier, same claimed brand, no explanation. Currency fluctuations accounted for maybe 12% of that swing; the rest was pure middleman markup. Order-to-delivery: Average 52 days for a standard order. But that's the average—nine orders in the audit exceeded 70 days. One shipment of 40 clutch discs got stuck at Apapa port for 23 additional days because the clearing agent's paperwork referenced incorrect HS codes. Wrong parts, right boxes: 12% of orders contained at least one SKU that didn't match the truck it was ordered for—typically because a local supplier substituted a "close enough" part number without telling anyone. A Dongfeng Cummins ISDe water pump was shipped for a FAW J6 that needed a completely different flange pattern. What We Actually Did (Not What the Brochure Says) We didn't sell Emeka a "solution package." We started with a test order—$2,850 covering 14 fast-moving part numbers across his four truck brands. He wanted to see if we were any different from the five suppliers he'd already burned through. Step 1 – Part Number Verification. Emeka sent us photos of 14 worn parts via WhatsApp. Several had partially illegible casting numbers—rust and road grime had eaten away the markings. Our engineer spent two hours cross-referencing dimensions, mounting points, and supplier catalogs. We identified two parts that Emeka's mechanics had been ordering incorrectly for over a year: a HOWO 371 clutch booster (they'd been buying the 336 model variant, which bolts up but has a shorter stroke) and a Shacman WP10 oil cooler core (wrong row count). We flagged both before shipping a single item. Step 2 – Quality Check That Means Something. Before packing, every part went through: (a) visual inspection under magnification for casting porosity or machining marks inconsistent with factory tooling, (b) dimensional verification against OEM blueprint tolerances on 5–7 critical fitment dimensions per part, (c) material certification cross-checked with the foundry lot number. We took photos of each part on the inspection bench and shared them with Emeka before he paid the balance. "Nobody has ever shown me the actual parts before shipping," he said. "They just send me a proforma invoice and a prayer." Step 3 – Logistics Without the Drama. We shipped via COSCO to Apapa port, using a clearing agent we've worked with since 2019 who knows the exact HS codes for truck parts categories. Customs clearance took four days instead of the usual two-week wrestling match. Total door-to-door from our warehouse to TransAfrika's yard in Ikeja: 19 days. That test order went 14 for 14—every part fit, every part worked. Emeka placed a follow-up order for $12,400 within the same week. Six months later, we signed a framework agreement covering 112 SKUs. What the Numbers Look Like After 18 Months MetricBefore (2022–2023 Avg)After (2024–2025 Avg)Change Annual parts spend$487,000$316,550–35% Parts failure within 90 days40.7% (127/312)4.1% (9/218)–90% Avg order-to-delivery52 days14 days–73% Wrong-part rate12.2%1.8%–85% Fleet downtime (truck-days/month)10438–63% Emergency air freight orders/month184–78% Active SKU Coverage (as of Q2 2025): • Shacman – WP10/WP12 engine components, Fast Gear 9JS135/12JS160T gearbox parts, brake calipers & drums, leaf spring assemblies, cab mounts & hydraulic cylinders (48 SKUs) • Sinotruk HOWO – WD615/WD618 cylinder heads & gasket kits, Holset turbochargers, 430mm clutch kits, differential crown wheel & pinion sets, ZF steering pumps, chassis electrical harnesses (31 SKUs) • FAW – Delphi fuel injection pumps, piston & liner kits for CA6DL/CA6DM engines, radiator cores, WABCO air dryers, Donaldson-style filter housings (19 SKUs) • Dongfeng – Transmission input shaft bearings, oil cooler assemblies, viscous fan clutches, engine mounting brackets, Sanden-type AC compressors, Cummins ISDe fuel system components (14 SKUs) "Look, before we started with them I was sleeping maybe four hours a night during peak season. Every morning I'd get WhatsApp messages—this truck is down, that truck is waiting for parts. Now my phone is quiet. Quiet enough that my wife noticed. She asked if I changed jobs. That's when I knew this was working."— Emeka Okafor, Procurement Director, TransAfrika Logistics Ltd, Lagos Questions We Get From Fleet Owners Are these genuine Shacman/Sinotruk factory parts or aftermarket? Both. We stock genuine OEM parts in factory-sealed packaging with serial-number traceability for critical engine and drivetrain components. For wear items—brake linings, filters, suspension bushings—we offer OEM-spec equivalents from audited Tier-1 suppliers who manufacture on the same production lines for the same truck brands. Every quote clearly states which tier you're getting. We don't mix them and we don't play games with packaging. If you ordered genuine, the boxes arrive sealed with hologram labels intact. What if I send you a photo of a part and you can't identify it? It happens—especially with older trucks that have had field modifications or non-standard repairs. When photos aren't enough, we ask for three measurements: bolt center distance, flange diameter, and overall length or stroke. If we still can't lock the number, we'll tell you honestly instead of guessing with your money. In 18 months with TransAfrika, we've had exactly four cases where we couldn't confidently match a part—and we told them upfront all four times. Two of those they ended up sourcing through a dealer network we connected them with. How do you handle warranty claims? I've been burned on this before. We settle warranty claims in 48 hours or less. Here's the actual process, not the marketing version: you send us clear photos of the failed part showing the failure point and the part number. Our engineer reviews within one business day. If it's a manufacturing defect—which it almost always is when a part fails early—the replacement ships on the next available dispatch, no charge for the part or the freight. No arguing about installation procedures, no asking for third-party inspection reports. We've processed 11 warranty claims for TransAfrika across 18 months. Average resolution time: 36 hours. We'd rather lose a few hundred dollars on a replacement than lose a customer who runs 127 trucks. Can you handle consolidated shipments to multiple West African ports? Yes. We ship regularly through COSCO and Maersk lines to Lagos-Apapa, Tema (Ghana), Cotonou (Benin), and Abidjan. For TransAfrika we run one consolidated container per month—usually a 20GP mixed with both heavy and light parts, palletized and stretch-wrapped. Customs clearance is handled by local agents we've worked with long enough to trust. If you're operating across ECOWAS borders, we can split documentation per destination so your clearing process at each port doesn't get tangled. Running Shacman, HOWO, FAW, or Dongfeng Trucks? Send us your parts list. We'll quote within 24 hours—with photos of your actual parts on the inspection bench before you pay the balance. Get a quote: email your inquiry or parts list today and we'll respond with pricing, lead time, and quality tier options within one business day.

HQ1119200-SQ01-20 K3055PU SANY Spare Parts Air Filtration Chip

H1364010002A0 Heavy Duty Foton Truck Spare Parts Right Front Combination Light Assembly

Bus Chassis Body Engine For YuTong Zhongtong King Long Ankai

Zk6147 Yutong Bus Parts 4116-00042 4116-00043 Rear Fog Lamp

3003055-1h Steering Tie Rod Ball Joint Assembly For FAW Jiefang J5 J6p J7 Jh6

Fifth Wheel Repair Kits Truck Lock Jaw With Wearing Ring Saddle Locking Bar

8202020-A01 FAW Truck Spare Parts Rear View Mirror For FAW Jiefang J6p

Heavy Duty FAW Truck Spare Parts 4329210012 FAW HOWO Air Dryer Kit

DZ9114160032 Truck Transmission Parts / Truck Clutch Plate For Shacman Delong F3000

Shacman F3000 X3000 Heavy Truck Transmission Parts 430mm Clutch Pressure Plate Dz9114160034

SHACMAN X3000 Air Dryer Assembly DZ96189360004 Heavy Truck Spare Parts

Shacman X3000 F3000 F2000 Dump Truck Body Parts / Dump Truck Cabin

DZ15221440500 Heavy Duty Truck Cabin Parts Cab Rear Shock Absorber Replacement

DZ97259820125 Truck Cabin Parts Oil Pump Hydraulic Cabin Lifting Pump

SHACMAN Delong F3000 Truck Brake Parts Rear Brake Drum DZ9112340006

Super Loud Electronic Air Horn Assembly 3721060-C4300 For Dongfeng GX KX KC KL VL X7

Quality Shacman Truck Spare Parts & Sinotruk HOWO Truck Parts factory

WEICHAI Heavy Duty Engine Water Pump Assembly 612600060234 Engine Cooling System Parts

WEICHAI Heavy Duty Engine Oil Pump Assembly 612600070270 Engine Lubrication System Parts

WEICHAI Heavy Duty Engine Oil Filter 1000428205A Engine Lubrication System Parts

WEICHAI Heavy Duty Engine O-Ring Seal 90017510054 Engine System Parts

WEICHAI Heavy Duty Engine Automatic Belt Tensioner 1008582390 Engine System Parts

WEICHAI Heavy Duty Engine Belt Tensioner Pulley 1005845779 Engine System Parts

WEICHAI Heavy Duty Engine Two-Stage Oil Pump 1000969399 Engine Lubrication System Parts

WEICHAI Heavy Duty Diesel Engine Fuel Injector 612630090012 Engine Fuel System Parts