Preserve your engine’s crankshaft alignment and prevent costly axial wear with the 612600013918 Lower Thrust Plate. This precision‑engineered component works in conjunction with the upper thrust plate to absorb axial loads generated by the clutch and torque converter, maintaining correct crankshaft end‑play. As a critical element of genuine Howo/Sitrak truck parts, the 612600013918 is manufactured to exact OEM specifications, ensuring a perfect fit and outstanding wear resistance in HOWO, Sitrak, Shacman, and compatible heavy‑duty diesel engines. Whether you are rebuilding a bottom end or replacing worn thrust washers, this lower plate delivers the strength, precision, and durability necessary to protect your crankshaft and main bearings, reducing downtime and extending engine service life.
The 612600013918 is a precision‑machined thrust bearing component designed to handle significant axial forces while maintaining minimal friction. Manufactured from high‑strength alloy steel with a specialized anti‑wear coating, this lower plate provides a durable, low‑friction surface for the crankshaft thrust collar. The surface finish is meticulously controlled to promote oil film retention, reducing metal‑to‑metal contact and preventing premature wear. Its geometry—including thickness, outer diameter, and locating features—is replicated to OEM specifications, ensuring correct end‑play clearance and proper interaction with the upper thrust plate and main bearing caps.
High Axial Load Capacity – The 612600013918 is engineered to withstand the thrust loads from clutch engagement and torque converter pressure, protecting the crankshaft and bearings.
Enhanced Lubrication – The precision‑ground surface promotes a stable hydrodynamic oil film, reducing friction and heat generation between the plate and the crankshaft.
Wear Resistance – The advanced coating provides exceptional resistance to adhesive and abrasive wear, ensuring long‑term performance under severe duty cycles.
Precision Thickness – Machined to tight tolerances, the 612600013918 guarantees correct end‑play adjustment, critical for proper crankshaft operation.
The 612600013918 lower thrust plate is dimensionally identical to the original equipment part used in HOWO, Sitrak, and Shacman heavy‑duty engines. It is specifically compatible with the WP10, WP12, WP13 series, as well as the WD615 engine family. Its locating tangs and bolt hole pattern match the main bearing cap precisely, ensuring correct orientation and easy installation. By choosing this OEM‑grade component, you eliminate the risks associated with aftermarket plates that may have incorrect thickness or poor surface finish, which can lead to excessive end‑play, crankshaft damage, or bearing failure.
The 612600013918 has been validated through extensive dynamometer and field testing, confirming its ability to maintain consistent crankshaft end‑play over thousands of operating hours. Fleets that have standardized on this plate report fewer thrust bearing failures and reduced clutch‑related issues, translating into lower maintenance costs and improved vehicle uptime. Its robust packaging ensures that the precision surfaces remain protected until installation.
Installing the 612600013918 correctly is essential for achieving the proper crankshaft end‑play and ensuring long engine life. Begin by thoroughly cleaning the main bearing cap and the thrust plate locating recess. Inspect the crankshaft thrust collar for any scoring or uneven wear; if defects are found, the crankshaft may need to be repaired or replaced. Lubricate the bearing surface of the thrust plate with clean engine oil or assembly lube. Place the 612600013918 into its recess on the bearing cap, ensuring the locating tang engages securely. Install the cap with the upper thrust plate already in place, and torque the cap bolts to the manufacturer’s specified value.
After assembly, measure the crankshaft end‑play using a dial indicator, with the crank pushed fully forward and rearward. The correct end‑play for most HOWO engines is typically between 0.08 and 0.25 mm (0.003–0.010 in). If the end‑play is outside this range, verify that the correct thickness of thrust plate has been installed. The 612600013918 is available in standard and oversize grades to accommodate different block/crankshaft combinations. Always consult the engine service manual for the specific clearance specification. With correct installation, the 612600013918 will provide reliable axial control for the life of the engine.
Each 612600013918 lower thrust plate is produced in an IATF 16949‑certified facility, following strict process controls from raw material to finished product. The steel alloy is tested for chemical composition and hardness prior to machining. CNC machining ensures that the plate’s thickness, outer diameter, and tang dimensions are held to micron‑level tolerances. The bearing face is precision‑ground to a controlled surface roughness, and the part is deburred to eliminate any sharp edges that could cause stress risers.
A 100% inspection is performed on critical dimensions, including thickness and flatness. Random samples from each batch are subjected to hardness testing, surface roughness measurement, and visual inspection under magnification. We also conduct a simulated installation check to verify correct fitment in a master block. This rigorous quality regimen ensures that every 612600013918 delivers the same reliable performance as the original OEM component, giving you complete confidence in your engine rebuild.
Engine rebuilders and fleet maintenance teams consistently choose the 612600013918 because it delivers dependable thrust control and eliminates end‑play related failures. The plate’s consistent thickness and high‑quality surface finish reduce the need for selective fitting, saving time during assembly. Many workshops have reported that using this plate eliminates the common problem of rapid thrust wear caused by inferior aftermarket parts, significantly extending the interval between overhauls.
Moreover, the 612600013918 is available in multiple oversize grades to accommodate block reconditioning, providing flexibility for rebuilders. Its sturdy packaging protects the precision surfaces, and the clear part numbering simplifies inventory management. When you choose this thrust plate, you are selecting a component that has been engineered to the highest standards, offering the perfect balance of strength, precision, and reliability.
In summary, the 612600013918 Lower Thrust Plate is a precision‑engineered component that plays a critical role in maintaining crankshaft axial position and protecting your engine from costly thrust‑related failures. Its robust alloy construction, precision machining, and rigorous quality control ensure that it delivers consistent performance over hundreds of thousands of miles. By investing in this genuine OEM‑grade part, you are safeguarding your crankshaft, main bearings, and connecting rods from excessive wear and potential catastrophic damage.
Don’t compromise on bottom‑end integrity – choose the 612600013918 for your next rebuild. With its proven track record in the field and widespread adoption by leading fleets and rebuilders, this thrust plate is the smart choice for anyone who values reliability, durability, and peace of mind. Keep your crankshaft precisely positioned and your engine running smoothly with the 612600013918 – the definitive choice for HOWO and Sitrak professionals.
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