The exhaust manifold gasket is the unsung hero of your engine’s exhaust system, sealing the critical junction between the cylinder head and the exhaust manifold to prevent dangerous gas leaks and maintain optimal backpressure. The 1009931855 Exhasut Manifold Gaske from HOWO is engineered to deliver an absolute, leak‑proof seal under the most extreme thermal and mechanical stresses, ensuring that your engine breathes properly, delivers maximum power, and stays compliant with emission standards. As a vital Howo/Sitrak truck parts component, this gasket is manufactured from high‑grade multi‑layer steel with a precision‑formed graphite coating, providing outstanding resistance to thermal cycling, corrosion, and pressure pulsation. Whether you are replacing a blown gasket or performing a full exhaust overhaul, the 1009931855 guarantees a perfect factory fit, superior sealing performance, and lasting durability – making it the trusted choice for professional workshops and fleet operators worldwide.
The exhaust manifold gasket is subjected to some of the most extreme conditions in the entire engine: temperatures exceeding 900°C, rapid thermal cycling, and corrosive exhaust gases. The 1009931855 is specifically designed to withstand these brutal conditions, maintaining a positive seal that prevents exhaust gases from escaping into the engine bay. A failed gasket can lead to a host of problems: loss of turbocharger boost, increased fuel consumption, reduced power output, elevated emissions, and even fire hazards from hot gas impinging on nearby components. HOWO has engineered this gasket with a multi‑layer steel (MLS) construction that incorporates an elastic spring layer, which compensates for the thermal expansion differences between the cast iron manifold and the aluminium cylinder head. The precision‑formed sealing beads concentrate clamping force exactly where it is needed, ensuring a gas‑tight seal that lasts for the life of the engine. With the 1009931855, you eliminate exhaust leaks, protect your turbocharger, and restore the original performance and efficiency of your HOWO truck.
Heat Resistance
Up to 950°C
Leak‑Proof
MLS Design
OEM Fit
Exact Match
Boost Protection
Turbo Safety
The 1009931855 exhaust manifold gasket is manufactured to the highest OEM standards, incorporating advanced materials and precision engineering. Below are the complete technical specifications for this essential engine sealing component.
| Parameter | Specification | Detail |
|---|---|---|
| OEM Number | 1009931855 | Exact Match |
| Part Name | Exhasut Manifold Gaske | HOWO Genuine |
| Brand | HOWO | Original Equipment |
| Application | HOWO T7H / A7 / MC11/MC13 | Exhaust manifold sealing |
| Material | Multi‑Layer Steel (MLS) + Graphite coating | High‑temperature resistant |
| Thickness (compressed) | 1.2 mm | Optimal sealing |
| Temperature Range | -40°C to +950°C | Extreme duty |
| Sealing Pressure | Up to 10 bar | Exhaust gas pressure |
| Gasket Type | Solid MLS with embossed beads | High resilience |
| Weight | 0.06 kg | Lightweight |
| Warranty | 12 Months | Manufacturer Guarantee |
The 1009931855 is the product of advanced materials science and precision stamping technology. The multi‑layer steel construction typically comprises three layers: a perforated spring steel core that provides elasticity, and two outer layers of stainless steel with a graphite coating. This design allows the gasket to accommodate thermal expansion and contraction cycles without losing clamping force or sealing integrity. The precision‑embossed sealing beads are computer‑optimised to distribute pressure evenly across the manifold flange, ensuring a consistent seal even on slightly warped surfaces. The graphite coating on the outer layers provides a sacrificial layer that fills minor surface imperfections and reduces the risk of gas leakage during the initial heat cycle. Each gasket is inspected for flatness, thickness, and bead integrity, guaranteeing that the 1009931855 meets HOWO’s stringent quality standards. This meticulous engineering ensures that your exhaust manifold stays sealed, your turbocharger receives the correct exhaust flow, and your engine operates at peak efficiency with reduced emissions.
The 1009931855 exhaust manifold gasket is specifically designed for HOWO heavy‑duty trucks equipped with MC11 and MC13 engine families, including the T7H, A7, and derivative models. It directly replaces the original gasket with identical shape, bolt hole pattern, and thickness, ensuring a straightforward installation without modifications. The gasket is compatible with both cast iron and stainless steel exhaust manifolds, and it works seamlessly with the factory turbocharger and exhaust system. This gasket is also compatible with many Sinotruk and other commercial vehicles that share the same engine architecture. To confirm fitment, always cross‑reference the OEM number on your existing gasket with 1009931855. If they match, this component will integrate seamlessly. Keeping this gasket in your spare parts inventory enables rapid exhaust system repairs, minimising downtime and preserving the performance and reliability of your engine.
HOWO T7H
Primary Fitment
HOWO A7
Also Compatible
MC11/MC13
Engine Series
Direct Replacement
No Modifications
Replacing a blown or degraded exhaust manifold gasket with the 1009931855 immediately restores the integrity of your exhaust system. The positive seal prevents exhaust gas leakage, ensuring that the turbocharger receives the full volume of exhaust gas, which translates to quicker spool‑up, improved throttle response, and increased torque. The elimination of leaks also reduces under‑hood temperatures, protecting nearby wiring, hoses, and components from heat damage. The improved sealing also results in lower emissions, as the exhaust aftertreatment system receives the correct gas composition, helping maintain compliance with environmental regulations. The robust MLS construction ensures that the gasket will not burn out or blow out, providing a long‑lasting seal that reduces the frequency of repairs. For fleet operators, a reliable exhaust manifold gasket reduces the risk of turbocharger failures, lowers maintenance costs, and helps maintain the performance and efficiency of your vehicles. By investing in the 1009931855, you ensure that your HOWO engine breathes freely, delivers maximum power, and operates reliably, mile after mile.
Installing the 1009931855 exhaust manifold gasket requires careful attention to cleanliness and torque. Begin by safely allowing the engine to cool completely. Remove the exhaust manifold, taking care to support its weight. Clean the cylinder head and manifold mating surfaces thoroughly, removing all old gasket material, carbon deposits, and corrosion. Use a suitable scraper and solvent, but avoid damaging the sealing faces. Inspect the manifold for flatness; if it is warped, have it machined or replace it. Install the new gasket onto the manifold or cylinder head, ensuring it is correctly oriented and the bolt holes align. Install the manifold and torque the bolts in a cross‑pattern to the manufacturer’s specification (typically 40‑50 Nm). Start the engine and check for any exhaust leaks using a soapy water spray or a smoke test. Re‑torque the bolts after a heat cycle. Periodically inspect the gasket and manifold for signs of leakage or cracking during routine maintenance. With proper installation, the 1009931855 will provide years of reliable sealing.
Pro Tip: When replacing the exhaust manifold gasket, always use new manifold bolts or studs. Reusing old fasteners can lead to incorrect clamp load and gasket failure. The 1009931855 is designed to work with OEM‑spec hardware; using genuine bolts ensures optimal sealing and long‑term reliability.
Genuine HOWO components are engineered to the highest standards, and the 1009931855 exhaust manifold gasket is no exception. Aftermarket gaskets often use inferior single‑layer steel or graphite composites that cannot withstand the extreme temperatures and thermal cycling of modern turbocharged diesel engines, leading to premature blow‑outs and leaks. HOWO’s gasket is manufactured using the same materials and processes as the original equipment, guaranteeing a perfect fit and reliable performance. By choosing the 1009931855, you benefit from HOWO’s rigorous testing, including thermal shock, pressure cycling, and corrosion resistance tests. This ensures that the gasket meets the demanding requirements of heavy‑duty trucking. Moreover, genuine parts are backed by a comprehensive warranty and supported by HOWO’s global network, giving you confidence in your purchase.
OEM Authentic
Factory Quality
Long Service
Extended Life
Global Standard
Trusted Worldwide
Q: Which vehicles use the 1009931855 exhaust manifold gasket?
A: The 1009931855 is designed for HOWO T7H, A7, and other models with MC11/MC13 engines, as well as many Sinotruk trucks with the same exhaust system architecture.
Q: What are the symptoms of a failing exhaust manifold gasket?
A: Visible exhaust leaks, a hissing or ticking noise from the engine, loss of turbocharger boost, reduced power, increased fuel consumption, and black soot around the manifold joint are common indicators.
Q: Can I reuse the old gasket?
A: No, the 1009931855 is a single‑use gasket. Once compressed, it may not provide a reliable seal if reused. Always install a new gasket when servicing the exhaust manifold.
Q: How do I verify the correct part?
A: Check the OEM number on your existing gasket. If it matches 1009931855, this is the exact replacement. Consult your vehicle’s parts manual for additional confirmation.
Order your 1009931855 Exhaust Manifold Gasket today! Explore our complete selection of genuine HOWO and Sinotruk engine sealing components at Howo/Sitrak truck parts and keep your exhaust system sealed and efficient.
The 1009931855 Exhaust Manifold Gasket from HOWO is a testament to precision engineering and uncompromising quality. By choosing this genuine component, you ensure that your engine’s exhaust system remains sealed, protecting your turbocharger, maintaining peak power, and reducing emissions. Whether you are a professional mechanic or a fleet manager, this gasket offers the performance, reliability, and exact fit that you can count on. Trust HOWO – the benchmark for excellence in heavy‑duty truck components – and experience the difference that genuine quality makes.
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