Description
Product Overview
The Haiyazhma Pressure Relief Valve is crafted from high‑grade stainless steel, delivering exceptional resistance to corrosion and wear in demanding automotive environments. Its robust metal construction ensures a long service life, even under continuous high‑temperature oil flow conditions. Designed specifically for Cummins ISZ13 engines, the valve meets EPA‑10 standards, guaranteeing compliance with emissions and performance regulations. The 2‑port threaded inlet provides a secure, leak‑free connection, simplifying installation and maintenance for technicians and DIY enthusiasts alike. With precise machining tolerances, the valve maintains consistent oil pressure, preventing over‑pressure scenarios that could damage engine components.
In addition to its core functionality, the valve features a compact form factor measuring just 3.66 x 1.65 x 1.57 inches, allowing it to fit seamlessly into tight engine bays without requiring extensive modifications. The lightweight design, at only 11.7 ounces, reduces overall engine weight while preserving structural integrity. Each unit is rigorously tested to ensure it meets the stringent specifications set by both Haiyazhma and industry standards, providing confidence in its reliability and performance.
The product includes a single pressure relief valve unit, identified by part numbers 4307195, 5473196, and 2130086, ensuring compatibility with a range of Cummins engine models such as ISZ13, ISX, DC09, DC13, and DC16. The valve’s exterior finish of polished stainless steel not only enhances its aesthetic appeal but also contributes to its durability by resisting scratches and surface degradation over time. This attention to detail reflects Haiyazhma’s commitment to delivering high‑quality automotive components that exceed customer expectations.
Installation is straightforward thanks to the threaded inlet design, which aligns with standard oil system connections. The valve’s internal spring mechanism is calibrated to release excess pressure at predetermined thresholds, safeguarding the engine from potential damage caused by pressure spikes. This proactive pressure management helps maintain optimal lubrication, reducing wear on critical engine parts and extending overall engine lifespan.
Overall, the Haiyazhma Pressure Relief Valve combines superior material selection, precise engineering, and user‑friendly features to provide a dependable solution for oil pressure regulation in heavy‑duty diesel engines. Its compatibility with multiple Cummins models, adherence to EPA standards, and robust construction make it an ideal choice for both professional mechanics and fleet operators seeking reliable engine protection.
![[Product front view showing all components]](https://www.galaxybuy.store/wp-content/uploads/2026/06/7f9b49e19fe047518aa83ee352f71ab9.jpg)
Usage
The valve is ideally suited for commercial trucks, construction equipment, and agricultural machinery that rely on Cummins ISZ13 engines for power and durability. In these applications, maintaining consistent oil pressure is critical to prevent premature wear and ensure smooth operation under heavy loads. By installing the Haiyazhma Pressure Relief Valve, operators can trust that the engine’s lubrication system will automatically adjust to pressure fluctuations, preserving component health during demanding tasks such as hauling, digging, or plowing.
For fleet maintenance programs, the valve offers a cost‑effective solution to reduce downtime caused by oil pressure failures. Its easy‑to‑replace design allows service technicians to quickly swap out a faulty valve without extensive disassembly, minimizing vehicle out‑of‑service time. This efficiency translates to lower labor costs and improved vehicle availability, essential factors for businesses that depend on continuous operation.
In addition to commercial use, the valve is compatible with aftermarket upgrades and retrofits for older diesel engines seeking to meet modern emission standards. By integrating the Haiyazhma valve, owners can enhance engine performance while complying with regulatory requirements, making it a versatile component for a wide range of diesel applications.
Why Choose Us
Haiyazhma has a long history of manufacturing precision‑engineered automotive components, and this pressure relief valve exemplifies the brand’s dedication to quality. Each valve undergoes a multi‑stage inspection process, including dimensional verification, pressure testing, and corrosion resistance assessment, ensuring that every unit meets or exceeds industry benchmarks. This rigorous quality control guarantees that customers receive a product that performs reliably under the toughest conditions.
Our commitment to customer satisfaction extends beyond the point of sale. Haiyazhma provides comprehensive technical support, offering detailed installation guides, fitment verification tools, and responsive assistance for any inquiries. Should a valve require replacement under warranty, our streamlined service process ensures prompt resolution, reinforcing confidence in the durability of our products.
Furthermore, the valve’s design incorporates environmentally responsible manufacturing practices, reducing waste and energy consumption during production. By choosing Haiyazhma, customers not only benefit from a high‑performance component but also support a company that prioritizes sustainability and responsible sourcing.
Key Features
- Durable stainless‑steel construction resists corrosion and extends service life in harsh engine environments.
- 2‑port threaded inlet ensures a secure, leak‑free connection for easy installation and maintenance.
- Precise pressure regulation protects engine components from over‑pressure damage, enhancing reliability.
- Compact size fits within tight engine bays without requiring extensive modifications.
- Comprehensive after‑sales support and warranty coverage provide peace of mind for buyers.
FAQ
What engines are compatible with this pressure relief valve?
The valve is designed for Cummins ISZ13 engines and is also compatible with other EPA‑10 compliant 15‑liter models such as ISX, DC09, DC13, and DC16. Always verify fitment with your specific engine serial number before purchase.
How do I install the valve?
Installation involves removing the existing valve, cleaning the inlet threads, and threading the new Haiyazhma valve into place using the standard torque specifications provided in the installation manual. The process typically takes less than 30 minutes for a qualified technician.
Does the valve come with a warranty?
Yes, Haiyazhma offers a limited one‑year warranty covering manufacturing defects. If the valve fails within the warranty period, contact our support team for a replacement or repair.
Can this valve be used in off‑road applications?
Absolutely. The robust stainless‑steel build and reliable pressure regulation make it suitable for off‑road equipment such as excavators, loaders, and agricultural tractors that operate under demanding conditions.




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