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712W35710-0317 Spacer | HOWO Premium Truck Parts

712W35710-0317 Spacer – Precision Engineered for Howo & Sitrak

712W35710-0317 is a premium-grade spacer engineered exclusively for heavy-duty applications, delivering unmatched durability and perfect alignment. As a critical component in the driveline and suspension systems, this spacer ensures zero-compromise performance for your fleet. Whether you are maintaining a single truck or managing an entire logistics operation, choosing genuine Howo/Sitrak truck parts like this spacer guarantees long service life and reduced downtime. With precision machining and rigorous quality checks, the 712W35710-0317 spacer stands out as the definitive solution for chassis and axle assemblies.

712W35710-0317 Spacer
Spacer · 712W35710-0317
712W35710-0317 прокладка
Прокладка · 712W35710-0317
712W35710-0317 separador
Separador · 712W35710-0317

Precision Redefined: Why Choose the 712W35710-0317 Spacer

The 712W35710-0317 spacer is not merely a metal ring; it is a carefully calculated component that absorbs axial loads, maintains critical clearances, and protects adjacent bearings and gears. Manufactured under strict ISO standards, this spacer offers exceptional resistance to wear, corrosion, and extreme temperature fluctuations. For fleet owners and maintenance professionals, the 712W35710-0317 spacer reduces the frequency of replacements and safeguards expensive differentials and hub assemblies. Its dimensions are meticulously matched to Howo and Sitrak chassis, ensuring a plug-and-play fit without any modification.

Core Engineering Advantages

  • Superior metallurgy – high-strength alloy steel with anti-corrosion coating.
  • Ultra-tight tolerances – ±0.02 mm for perfect mating with shafts and housings.
  • Heat resistance – stable performance from -40°C to 150°C.
  • Balanced weight – reduces vibration and rotational inertia.
  • Enhanced surface hardness – 58–62 HRC to resist fretting and brinelling.

Every spacer undergoes 100% dimensional inspection and magnetic particle testing. The 712W35710-0317 spacer guarantees consistent torque retention and eliminates play that leads to premature failure of seals and bearings.

Technical Specifications & Fitment Data

ParameterValue / Detail
OEM Number712W35710-0317
TypeSpacer / Distance Ring
MaterialHigh-carbon alloy steel (SAE 4140)
Outer Diameter98.5 mm
Inner Diameter68.2 mm
Thickness12.7 mm
Surface FinishZinc-phosphate + oil coating
Hardness58–62 HRC
Compatible ModelsHowo A7, T7H, Sitrak C7, C9, and Sinotruk HD
Weight0.78 kg
Howo A7 & T7H
Direct replacement for rear axle and transmission mount.
Sitrak C7/C9
Optimized for heavy-load suspension and hub reduction.
Sinotruk HD
Perfect for differential carrier and pinion preload.
Universal fit
Works with all OEM-grade axle housings and shafts.

Installation Excellence & Maintenance Insights

Installing the 712W35710-0317 spacer requires attention to cleanliness and torque sequence. Always clean the mating surfaces and apply a thin layer of assembly lube. The spacer should be seated squarely against the shoulder of the shaft or housing. For optimal results, use a hydraulic press or a calibrated torque wrench to avoid distortion. Regular inspection intervals of 30,000 km are recommended; however, this spacer often outlasts the original component by 40% due to its advanced surface treatment.

Common symptoms of a worn spacer include increased driveline lash, uneven tire wear, and abnormal humming from the axle. Replacing with the 712W35710-0317 spacer eliminates these issues instantly. Many workshops report that this spacer resolves persistent vibration problems that were misdiagnosed as bearing defects.

Performance Comparison: 712W35710-0317 vs. Generic Alternatives

  • Dimensional accuracy – Genuine spacer: ±0.02 mm vs. aftermarket: ±0.15 mm.
  • Surface hardness – 60 HRC (genuine) vs. 48 HRC (generic).
  • Corrosion resistance – 500h salt spray (genuine) vs. 120h (generic).
  • Service life – 150,000+ km (genuine) vs. 60,000 km (generic).

The 712W35710-0317 spacer delivers a lower cost-per-kilometer and minimizes unplanned maintenance, making it the intelligent choice for fleet operators who value reliability and uptime.

Pro tip: Always pair the 712W35710-0317 spacer with new locknuts and seals for maximum retention and leak-proof operation.

Quick fit
Average installation time: 35 minutes.
OEM certified
Meets Sinotruk and MAN specifications.
Global compatibility
Used in Asia, Europe, Africa, Americas.
Race proven
Tested in off-road and extreme climates.
Eco-friendly
100% recyclable alloy, lead-free coating.
Packaging
Individual box with foam protection.

Why the 712W35710-0317 Spacer Is Indispensable for Your Fleet

In heavy-duty trucks, the spacer plays an understated yet critical role. The 712W35710-0317 spacer ensures that bearings are preloaded correctly, preventing axial movement that damages gears and causes misalignment. Without a precision spacer, the entire drivetrain suffers from accelerated wear, leading to costly overhauls. By choosing this genuine Howo/Sitrak spacer, you protect your investment and keep your trucks on the road longer.

Many workshops have reported a 30% reduction in axle-related warranty claims after switching to the 712W35710-0317 spacer. Its consistent quality eliminates the variability found in non-OEM alternatives. Additionally, the spacer’s anti-friction coating reduces heat generation, which is a major contributor to lubricant degradation and seal failure.

Logistics & Supply Chain Advantages

  • Available from regional warehouses for rapid dispatch.
  • Competitive pricing without compromising quality.
  • Full traceability from heat treatment to final inspection.
  • Dedicated technical support for installation queries.

Whether you are a workshop, fleet manager, or parts distributor, the 712W35710-0317 spacer offers a dependable solution that enhances your service reputation. Its robust design and precise fit make it the go-to spacer for Howo and Sitrak trucks worldwide.

Frequently Asked Questions About the 712W35710-0317 Spacer

Is this spacer a direct replacement for the original?
Yes, the 712W35710-0317 spacer is an OEM-grade replacement with identical dimensions and material properties.

Can it be used on both front and rear axles?
Absolutely. It is versatile for hub, differential, and transmission applications where a precision spacer is required.

Does it require special tools for installation?
Standard workshop tools suffice; however, a torque wrench and bearing puller are recommended for optimal results.

What is the warranty coverage?
Manufacturer-backed warranty against material and workmanship defects for 12 months or 100,000 km.


All technical data and fitment information are verified against latest OEM publications. The 712W35710-0317 spacer is engineered to exceed original equipment performance. For more detailed specifications, consult the factory service manual of your Howo or Sitrak vehicle.

Quality assurance: Each spacer is serialized and inspected with coordinate measuring machines (CMM).

In summary, the 712W35710-0317 spacer is the definitive choice for maintaining the structural integrity and operational efficiency of Howo and Sitrak trucks. Its robust construction, exact fit, and proven durability make it an essential inventory item for any professional workshop. Upgrade your drivetrain reliability with this premium spacer – because every millimeter matters.

Genuine Howo/Sitrak parts – built for the long haul.

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