The Cast iron transmission Double head bolt is a specialised fastening component designed to securely clamp the cast iron transmission housing to the engine block on HOWO A7 8X4 heavy trucks. This double‑ended stud provides superior clamping force and alignment precision, ensuring a leak‑free and vibration‑resistant joint. The Cast iron transmission Double head bolt is manufactured from high‑grade alloy steel with heat treatment to withstand the extreme thermal and mechanical stresses of heavy‑duty powertrain applications.
At howo Parts, we supply the Cast iron transmission Double head bolt in two lengths to suit different mounting positions, along with the matching 1 shape Hex nut. Every Cast iron transmission Double head bolt is produced to original equipment tolerances, ensuring a perfect fit and reliable performance over millions of kilometres. The Cast iron transmission Double head bolt is a critical component for maintaining proper transmission alignment and preventing premature gasket failure.
This Cast iron transmission Double head bolt is available in two variants: a longer version for main mounting points and a shorter version for auxiliary positions. Both variants share the same high‑strength material and corrosion‑resistant coating. With the correct torque application, the Cast iron transmission Double head bolt provides consistent clamp load that maintains the integrity of the transmission‑to‑engine interface, reducing the risk of oil leaks and component fatigue.
The Double head bolt is a two‑ended threaded stud with equal or different thread lengths on each end. It is used to secure the transmission housing to the engine block, providing a strong, concentric joint that resists loosening under cyclic loads. The Cast iron transmission Double head bolt is precision‑rolled for consistent thread quality and high fatigue resistance.
The 1 shape Hex nut is a standard hexagonal nut that mates with the Double head bolt. It is manufactured from the same high‑strength material and features a precise thread fit to ensure proper clamp load. This nut is used to secure the transmission flange against the engine, completing the fastening system for The part.
| Part NO. | Description |
|---|---|
| WG9700220004 | Double head bolt |
| WG9700220005 | Double head bolt |
| ZQ340610T13F6 | 1 shape Hex nut |
Our Cast iron transmission Double head bolt is forged from premium chrome‑molybdenum steel and heat‑treated to achieve the optimal balance of hardness and toughness, ensuring it withstands the high clamping forces and thermal cycling of heavy‑duty operation.
Each Cast iron transmission Double head bolt features rolled threads that provide superior fatigue resistance and a smoother surface finish, reducing friction during tightening and ensuring accurate torque readings.
We supply The part together with the matching 1 shape Hex nut, eliminating compatibility concerns. Both parts are designed to work as a matched set for optimal clamp load distribution.
Our inventory of Cast iron transmission Double head bolts is ready for immediate dispatch, with technical support available to assist with torque specifications and installation best practices.
The Cast iron transmission Double head bolt is not just a fastener; it is a precision alignment device that ensures the transmission input shaft remains concentric with the engine crankshaft. Any deviation can cause premature bearing wear, clutch misalignment, and oil leaks. Using a genuine Cast iron transmission Double head bolt guarantees that the clamping force is evenly distributed across the joint.
Heavy truck transmissions experience significant temperature fluctuations and vibration. Our Cast iron transmission Double head bolt is designed with a controlled coefficient of thermal expansion to maintain clamp load across the entire operating range, reducing the risk of loosening or gasket blowout.
When installing the Cast iron transmission Double head bolt, always clean the threads and apply a light coat of oil to achieve accurate torque. Tighten the 1 shape Hex nut in a cross‑pattern to the manufacturer’s specified torque. Re‑torque after the first service to ensure long‑term joint integrity.
We recommend inspecting the Cast iron transmission Double head bolts and nuts every major service. Check for signs of corrosion, thread damage, or stretching. Replace any worn Cast iron transmission Double head bolt with genuine parts to maintain the safety and reliability of your vehicle.
Our Cast iron transmission Double head bolt is specifically dimensioned for the HOWO A7 8X4 transmission mounting pattern. The bolt lengths and thread pitches match the original design, ensuring a direct replacement without modifications.
Each Cast iron transmission Double head bolt undergoes hardness testing, dimensional inspection, and magnetic particle examination to guarantee freedom from defects. We back our fasteners with a comprehensive warranty against material failure.
We maintain a large stock of Cast iron transmission Double head bolts to support fleet maintenance programs. Bulk orders are welcome, and we offer volume discounts for workshops and distribution partners.
Investing in genuine Cast iron transmission Double head bolts prevents costly oil leaks, clutch replacement, and transmission overhauls. The durability of our fasteners ensures that your HOWO A7 8X4 remains reliable and serviceable for years to come.
Aftermarket bolts may have inconsistent hardness or incorrect thread fit, leading to clamp load loss and joint failure. Our Cast iron transmission Double head bolt is engineered to the exact OEM specifications, giving you peace of mind that the transmission is securely fastened to the engine.
Our online catalog provides comprehensive access to genuine SINOTRUK parts for all major vehicle lines — including HOWO, Sitrak, Steyr, and Yellow River series trucks. You can browse detailed specifications, original part numbers, and exploded-view diagrams for every assembly. Whether you are performing routine maintenance or planning a major overhaul, the catalog helps you quickly identify the correct components for your vehicle. When you become a SINOTRUK customer, we offer complimentary full‑access catalog services, ensuring you always have the latest product data and interchangeability information at your fingertips to support efficient fleet management and accurate parts ordering.
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