Product Introduction: A high-temperature-resistant rubber hose with reinforced layers and quick-connect fittings. It features a smooth internal surface to minimize water flow resistance, and its flexible construction accommodates engine vibration and movement. The rubber material resists heat, coolant corrosion, and aging for long service life.

Function: Delivers engine coolant to the air compressor to dissipate the heat generated during compressed air production. This prevents the air compressor from overheating, ensuring reliable operation and extending its service life.

Cool Water Inlet Pipe-Air Compressor 201V06303-5831 SINOTRUK – OEM-Grade Cooling Line for MC11/MC13 Engines

Your air compressor breathes hard under pressure — and without a reliable cool water inlet pipe delivering steady coolant flow, it overheats, underperforms, and puts your entire braking air supply at risk. The 201V06303-5831 Cool Water Inlet Pipe is the factory-spec lifeline that keeps your SINOTRUK air compressor running cool, quiet, and dependable across millions of kilometers of heavy-duty service.

Engineered to OEM standards for SINOTRUK SITRAK C7H/G7, HOWO T7H/A7 (China V/VI emission) heavy trucks equipped with MC11 and MC13 engines, this coolant inlet pipe channels cooling water directly into the air compressor housing — safeguarding the pneumatic brake source system that your fleet depends on every single day.

Key Functions & Benefits of the 201V06303-5831 Cool Water Inlet Pipe

• Precision Coolant Delivery: This pipe faithfully routes engine coolant into the air compressor cylinder head, preventing thermal stress and maintaining optimal operating temperatures even under sustained high-RPM braking demand.
• Brake System Reliability: By keeping the air compressor thermally stable, it ensures consistent compressed air output — the heartbeat of your truck’s pneumatic braking, suspension, and auxiliary systems.
• OEM-Exact Fitment: Manufactured to match SINOTRUK original dimensions, bend radii, and connection interfaces — it drops right in without modification, saving your workshop hours of downtime.
• Corrosion-Resistant Construction: Built from high-grade aluminum alloy with anti-corrosion treatment, this pipe resists coolant erosion and external oxidation across extreme temperature cycles (-40°C to +120°C).
• Leak-Proof Sealing: Precision-machined connection ports and factory-grade O-ring grooves eliminate coolant seepage that could starve your compressor of cooling capacity.
• Extended Service Life: Vibration-dampened design withstands the relentless mechanical stress of heavy-haul, mining, and long-distance transport applications.

Technical Specifications

Application Scenarios

The 201V06303-5831 cool water inlet pipe serves as the critical cooling conduit for the engine-driven air compressor on SINOTRUK heavy trucks. It lives in a demanding environment — bolted directly to the compressor block, exposed to engine heat, road vibration, and coolant chemistry — and it must perform flawlessly to keep compressed air flowing to:

• Service brake circuits (front and rear axle)
• Parking/emergency brake release systems
• Air suspension leveling (where equipped)
• Trailer brake supply lines
• Pneumatic auxiliary systems (horn, seat adjustment, differential locks)

When this pipe fails — through corrosion pinholes, cracked joints, or degraded seals — coolant loss starves the compressor of thermal protection. The result: accelerated wear, reduced air output, and potential brake system pressure warnings that sideline your truck.

OEM/ODM Capability & Custom Packaging

JINAN METTLEAD AUTO SALES CO., LTD. delivers more than parts — we deliver partnership flexibility that serious procurement teams demand:

• White-Label Packaging: We supply this cool water inlet pipe under your brand identity with custom labels, box printing, and documentation — ready for your distribution network.
• Custom Packaging Solutions: Whether you need individual poly-bag packing, branded cartons, or bulk palletized shipments, we configure packaging to your warehouse and retail requirements.
• Strict Quality Control: Every 201V06303-5831 pipe undergoes dimensional inspection, pressure leak testing, and surface quality verification before it leaves our facility.
• Factory-Direct Pricing: No middlemen. You negotiate directly with the source — gaining cost advantages that strengthen your margin in competitive aftermarket channels.
• Complete SINOTRUK Parts Coverage: Beyond this single SKU, we supply the full range of SINOTRUK HOWO engine parts — enabling consolidated orders that reduce your logistics cost per unit.

Frequently Asked Questions (FAQ)

What exactly does the 201V06303-5831 cool water inlet pipe do?

It acts as the dedicated coolant highway between your engine’s cooling circuit and the air compressor. Without it, the compressor runs dry of cooling water, overheats rapidly, and can no longer produce the compressed air your braking system needs to function safely.

Which trucks and engines does this cool water inlet pipe fit?

This pipe is designed for SINOTRUK vehicles equipped with MC11 or MC13 engines — including SITRAK C7H, SITRAK G7, HOWO T7H, and HOWO A7 models meeting China V and China VI emission standards. Always verify your chassis VIN or existing part number before ordering.

How do I know if my cool water inlet pipe needs replacement?

Watch for these warning signs: visible coolant weeping around the compressor connections, low coolant level without other obvious leaks, air compressor overheating alarms, reduced brake air pressure build-up rate, or white corrosion deposits on the pipe surface. Any of these symptoms suggest the pipe is compromised.

Is this an original SINOTRUK part or aftermarket?

We supply OEM-equivalent quality parts manufactured to original SINOTRUK specifications. Dimensions, material grade, and sealing interfaces match the factory-installed component — ensuring drop-in fitment without modification.

What is the typical lead time for bulk orders?

Standard stock orders ship within 3–5 business days. For large-volume or white-label orders requiring custom packaging, typical lead time is 7–15 business days depending on quantity. We recommend contacting our team for real-time stock availability.

Can coolant type affect the lifespan of this pipe?

Yes. Always use the coolant grade specified by SINOTRUK (typically organic acid technology / OAT-based antifreeze). Incompatible coolants with high chloride or silicate content accelerate internal corrosion and shorten pipe service life significantly.

Secure Your Fleet’s Braking Reliability — Request a Quote Today

Every hour your truck sits idle waiting for a cooling pipe is revenue lost. JINAN METTLEAD AUTO SALES CO., LTD. keeps your supply chain moving with factory-direct pricing, fast dispatch, and the complete SINOTRUK parts catalog under one roof.

Ready to order the 201V06303-5831 Cool Water Inlet Pipe or need a bulk quotation?

👉 Contact us now with your required quantity, destination port, and any custom packaging needs. Our team responds within 24 hours with competitive pricing and confirmed lead times.

Browse our full inventory of SINOTRUK HOWO engine parts to consolidate your order and reduce per-unit shipping costs.

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