Description

Technical Parameters

VG1540010014 Howo Short Thermostat Cover is a high-quality engine component built for HOWO heavy-duty trucks. As a key piece of the engine cooling system, it securely holds and seals the thermostat tight, keeping engine temperature stable and ensuring great thermal performance at all times. Made of premium cast iron, it has outstanding heat resistance and durability, holding up well against deformation even in harsh working conditions. It's a perfect match for all original HOWO engine assemblies, and works as a direct replacement part for quick, easy installation. Fully up to OEM quality standards, it delivers long-term reliable service for all applicable HOWO truck models.

VG1540010014 Howo Short Thermostat Cover

Key Specifications

1. Compatibility & Fitment

Applicable truck models: HOWO A7 / T5G / T7H, SHACMAN X3000, FAW J6/J7 series heavy-duty trucks.Matching engine models: WD615, MC11, CA6DM2 diesel engines.OE/OEM Reference No.: VG1540010014 (100% match with original factory part number).Interchangeability: Direct interchangeable with the genuine thermostat cover of above models, no secondary modification needed for installation.Value-added service: Professional VIN matching service is available for accurate part confirmation upon request.

2. Technical Parameters

Overall dimensions & weight: Strictly consistent with OEM standards, perfectly fitting the original engine mounting position.Material: High-grade cast iron (thermostat cover main body).Working performance: Temperature resistance range -40°C ~ 220°C, adapted to extreme temperature working conditions; Recommended installation torque complies with the original engine assembly standard.

3. Material & Manufacturing Process

Core material grade: QT450 ductile iron, featuring high structural strength and excellent thermal conductivity.Production process: Precision sand casting + CNC machining for dimensional accuracy; Surface phosphating treatment applied for enhanced rust and corrosion resistance.Workshop capability: Mature casting production line with automated machining and quality sorting processes, ensuring uniform product precision and consistency.

4. Quality Grade & Inspection

Quality grade: High-quality aftermarket (OEM equivalent) (meets the same quality standard as original equipment parts).Inspection items: 100% full-size inspection, hardness testing, air tightness pressure test for each unit; No deformation or leakage qualified for ex-factory.Quality certification: Compliant with IATF16949 automotive quality system and ISO9001 standard; Complete batch traceability is supported, with clear production batch and inspection records for each shipment.

5. Service Life & Performance

Average service life: Over 300,000 km for heavy-duty trucks in regular working conditions, or 8,000+ working hours for mining and construction vehicles.Performance highlights: The optimized casting structure improves heat dissipation efficiency significantly. It has strong anti-deformation and shock resistance, ensuring steady performance in harsh operating environments like high-temperature deserts, cold northern areas and rough mine sites. Even under long-term continuous heavy load operation, this thermostat cover will not crack or lead to oil leakage problems.

advantages

Superior Heat & Impact Resistance： we use QT450 ductile iron for the whole cover body and adopt high-pressure sand casting process, then do overall stress relief heat treatment. This creates a tough component that easily withstands the engine's continuous high-temperature environment (-40°C to 220°C) without warping or cracking, even under long heavy-duty truck operation.

Precision Sealing for Leak-Free Performance： our CNC machining ensures the sealing surface holds tight dimensional tolerance (±0.02mm). Paired with a high-grade EPDM rubber gasket, the flat face sealing design blocks coolant leakage completely. It fits snugly against the engine cylinder head, eliminating gaps that cause pressure loss or coolant seepage in daily use.

OEM Exact Fit for Hassle-Free Installation： the cover is fully engineered to match the original HOWO mold specs. All mounting holes and bolt positions align perfectly with WD615, MC11 and CA6DM2 engines-no drilling, grinding or modification needed. It's a direct drop-in replacement, cutting down repair time for workshop and on-site fitting work.

Rust & Corrosion Protection for Longer Service： we apply a full-surface phosphating finish to the cover. This treatment effectively resists rust and coolant corrosion, even in harsh working conditions like humid areas, mining sites and coastal regions. It keeps the cover surface intact for years, avoiding scale buildup that affects heat transfer efficiency.

Reinforced Structural Design for Stability： added thickened ribbing on the cover's back boosts overall structural rigidity. This design absorbs engine vibration and road shocks during heavy load driving, preventing brittle fracture at weak points. It maintains shape and sealing performance consistently on rough mountain roads or bumpy mine terrains.

FAQ

Q: My biggest concern is coolant leaks with thermostat covers. How reliable is the sealing on this part?

A: Totally get your concern-leaks are a huge hassle for any repair job. The VG1540010014 Howo Short Thermostat Cover comes with a factory-matched EPDM rubber gasket, and we machine the sealing face to tight ±0.02mm tolerances. It seals flush against the cylinder head with zero gaps, holds system pressure steady, and we've had zero comeback issues for leaks on these units so far. No sweat at all for heavy-duty daily use.

Q: Will this fit my HOWO T7H with a WD615 engine straight out of the box? Do I need any modifications?

A: Absolutely a direct fit. This cover is engineered to OEM exact specs for HOWO A7/T5G/T7H, plus SHACMAN X3000 and FAW J6/J7 with WD615, MC11 and CA6DM2 engines. All mounting holes and bolt positions line up perfectly-just bolt it on, no drilling, grinding or tweaks needed. Saves you a ton of installation time in the shop.

Q: Can this replace the original thermostat cover on my truck, and is it up to the same quality standard as the factory part?

A: Yes, the VG1540010014 Howo Short Thermostat Cover is a direct interchange for the genuine OEM part, and built to the same quality benchmarks. We do full air-tightness and dimensional checks on every unit before shipping, so it's just as reliable as the factory one-all at a better aftermarket price point for your fleet or repair shop.

Q: How long can I expect this thermostat cover to last on a heavy-duty truck that's running 12-hour shifts daily?

A: Under nonstop heavy load operation, it'll easily hit 300,000+ km, or about 8,000 working hours for mining/construction vehicles. The phosphating surface finish also fights coolant corrosion and rust, so it won't degrade even in humid, coastal or dusty job site conditions. Solid, long-lasting part for hard-working trucks.

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