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Braking system

Home / Products / DONGFENG KC / Braking system / Relay Valve Assembly OE 3527010-90002 for Dongfeng KC Heavy Trucks

Relay Valve Assembly OE 3527010-90002 for Dongfeng KC Heavy Trucks

This genuine relay valve assembly with OE number 3527010-90002 is original factory core pneumatic control component exclusively engineered for Dongfeng KC long-haul heavy truck air brake systems. It adopts integrated die-cast aluminum alloy valve body with multi-standard labeled air ports (22/23 inlet/outlet), internal high-precision rubber sealing diaphragm and spring reset structure, which delivers large-volume rapid air flow to shorten rear axle brake response delay and balance braking force of heavy loaded trailers. The overall valve structure follows Dongfeng KC original pipeline layout standard, pre-reserved mounting bolt holes for direct bolt-on installation without pipeline modification. This relay valve strictly passes DFCV OEM million-cycle on-off fatigue test, high-low temperature air tightness test and anti-vibration road simulation test. Authorized third-party pneumatic component inspection verifies its flow parameter, port position and mounting dimension fully consistent with factory original valves, widely used as replacement spare parts for Dongfeng KC logistics tractors with slow brake response and air leakage valve failures.

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PRODUCT DESCRIPTION

Die-Cast Aluminum Valve Body, Large Flow Fast Brake Response & Standard Labeled Air Ports

This OE 3527010-90002 brake relay valve is made of high-strength anti-corrosion die-cast aluminum alloy integral valve body, with four-corner fixed mounting lugs and clearly numbered standard air ports (22 inlet, 23 outlet) for easy pipeline identification. Built-in thick wear-resistant rubber diaphragm and precise return spring structure support large-flow instantaneous air transmission, greatly reducing rear axle brake lag for fully loaded heavy trucks and trailers to balance front and rear braking force evenly. Fully enclosed internal sealing structure effectively isolates mud, dust and moisture, avoiding internal air leakage caused by foreign matter erosion. The overall contour and bolt hole positions 1:1 replicate Dongfeng KC original vehicle mold data, realizing plug-and-play replacement without cutting or reworking brake air pipelines.

Slow Brake Response, Unbalanced Front-Rear Braking, Internal Air Leakage & Mismatched Pipeline Ports

Heavy truck fleet operators and brake repair technicians often encounter multiple safety hazards from inferior aftermarket relay valves: small internal flow causes obvious brake delay, extending braking distance and collision risk; unbalanced air supply leads to front wheel lock while rear wheels slip under heavy load; thin inferior rubber diaphragm ages fast and ruptures to produce continuous air leakage, wasting compressed air and draining storage tanks; unmarked irregular ports confuse pipeline connection and require extra adapters. This genuine DFCV OEM relay valve completely solves these brake system pain points: large-flow design shortens brake reaction time; stable air output balances front-rear braking force; durable thick diaphragm prevents air leakage; standard numbered ports simplify pipeline assembly, cutting fleet accident risks and frequent spare part replacement costs.

DFCV OEM Pneumatic Standard, Multi-Round Harsh Environment Durability Lab Testing

As a vital safety control component of Dongfeng KC air brake system, this relay valve fully complies with Dongfeng Commercial Vehicle official pneumatic component production quality standards. Every finished relay valve completes three mandatory professional durability laboratory tests: million-cycle continuous switch fatigue test, -40℃~85℃ high-low temperature air tightness aging test, and long-time chassis road vibration simulation test, maintaining stable flow and sealing performance under cold northern winters, humid coastal haul and bumpy mountain road transport scenarios. Original factory barcode label with complete OE marking is attached on valve side for genuine product traceability, all port sizes, mounting spacing and internal pressure parameters strictly match original vehicle factory specifications, zero assembly mismatch after replacement.

In-Stock Genuine OEM Relay Valves & Fast Low-Downtime Brake Repair Wholesale Supply

We are authorized Dongfeng wholesale supplier of DFCV OEM pneumatic brake spare parts for Dongfeng KC heavy trucks, maintaining permanent sufficient stock of OE 3527010-90002 relay valve assemblies. Each relay valve is wrapped with shockproof bubble film and original DFCV carton packaging to prevent valve body collision and thread port damage during cross-border sea and land logistics transit. Its direct bolt-on plug-and-play design allows professional brake maintenance technicians to finish full replacement within 15 minutes without refitting vehicle air pipelines, drastically cutting vehicle downtime for logistics fleets and heavy truck pneumatic brake repair garages. We provide a 24-month full air tightness & structural quality warranty plus free remote pipeline connection technical guidance for all worldwide bulk wholesale buyers.

TECHNICAL SUPPORT

1. Accessories selection consultation

- Provide ** intelligent selection tools ** (such as parts matching query system), input the vehicle model VIN code or engine model to match the corresponding parts number, reducing the selection error rate.

The technical team is available online 7×12 hours to answer technical questions about accessories (such as material compatibility and installation processes).

2. Customized development support

We offer specialized R&D services for special market demands (such as heat dissipation accessories for high-temperature regions in the Middle East and dedicated suspension components for road conditions in Africa), and complete sample delivery within six weeks.

3. Training and Technical materials

Provide remote/on-site training for the customer's after-sales team (such as diagnosis of electrical control accessories and DPF regeneration operation), along with multilingual versions of the "Accessories Installation Manual" and "Troubleshooting Guide".

4. Quality Traceability and Improvement

Through the QR code traceability system (one product, one code), track the production batch of accessories and the source of raw materials, respond quickly to quality complaints and initiate improvement processes.

AFTER-SALES AND LOGISTICS SUPPORT

After-sales service

Quality Assurance Policy

-The warranty period for original factory parts is 12 months (counting from the date of signature for receipt), covering material defects, process issues, and man-made damage.

- Provide "Localized Express repair Service" : Cooperate with third-party repair networks in markets such as Southeast Asia and the Middle East, and deliver emergency parts to designated repair points within 4 hours.

Return and Exchange Process

-The customer is required to submit the test report (such as a third-party appraisal) within the warranty period. After confirmation by Dongfeng, a reissue or refund will be arranged within 5 working days.

Logistics support

Warehouse Layout

-Five major regional accessory centers have been established globally (Southeast Asia, the Middle East, Africa, South America, and Europe) to achieve "next-day delivery" for mainstream accessories (covering customers within the regions).

Emergency Logistics Plan

-Emergency parts can be directly delivered within 48 hours via the "Dongfeng Exclusive Aviation Special Line" (such as engine ECU, brake valves and other key components).

Packaging Optimization

-Use shockproof and moisture-proof packaging (such as honeycomb cartons + pearl cotton), and reinforce fragile parts (such as glass, sensors), keeping the damage rate within 0.5%.