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China factory - Boigevis Trading (guangzhou) Co., Ltd.

Boigevis Trading (guangzhou) Co., Ltd.

  • China,Guangzhou ,Guangdong
  • Verified Supplier
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  3. High selling expansion tank hose 8K0 121 081 AB for A5 and S5
China High selling expansion tank hose 8K0 121 081 AB for A5 and S5
China High selling expansion tank hose 8K0 121 081 AB for A5 and S5

  1. China High selling expansion tank hose 8K0 121 081 AB for A5 and S5
  2. China High selling expansion tank hose 8K0 121 081 AB for A5 and S5

High selling expansion tank hose 8K0 121 081 AB for A5 and S5

  1. MOQ： 1pcs
  2. Price： 4.7USD
  3. Get Latest Price
Car Model for A5 and S5
Delivery Time 3-7days
Brand Boigevis
Payment Terms Western Union,T/T,D/P,D/A,L/C
Size Standard size
Packaging Details Normal
Packing Boigevis packing
OE NO. 8K0 121 081 AB
Warranty 12 Months
Point Of Origin Guangdong, China
Item Name expansion tank hose
Shipping Way DHL UPS FEDEX EMS TNT
Quality High quality
Model Number 8K0 121 081 AB
Brand Name Boigevis
Place of Origin China

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  1. Product Details
  2. Company Details

Product Specification

Car Model for A5 and S5 Delivery Time 3-7days
Brand Boigevis Payment Terms Western Union,T/T,D/P,D/A,L/C
Size Standard size Packaging Details Normal
Packing Boigevis packing OE NO. 8K0 121 081 AB
Warranty 12 Months Point Of Origin Guangdong, China
Item Name expansion tank hose Shipping Way DHL UPS FEDEX EMS TNT
Quality High quality Model Number 8K0 121 081 AB
Brand Name Boigevis Place of Origin China
This OEM coolant expansion tank overflow hose marked with part number 8K0 121 081 AB is an essential cooling pipeline spare part tailored for Audi A5 and S5 B8 chassis models, maintaining steady sales volume and recurring bulk orders across the global VAG aftermarket. It is widely stocked by professional Audi repair workshops and cross-border auto parts wholesalers, supporting one-stop combined procurement with expansion tank caps, pipe clamps, cooling gaskets and full vehicle cooling system maintenance kits.

Practical cooling pipeline fitting for consolidated bulk purchasing

This overflow pipeline links the radiator and coolant expansion tank to balance system liquid volume and release excess pressure during engine operation. It endures long-term high-temperature baking inside the engine compartment, continuous coolant chemical erosion and frequent driving vibration. The thermoplastic reinforced pipe body will gradually turn brittle, develop micro cracks and produce coolant seepage after long mileage use.

A damaged expansion tank hose will trigger multiple vehicle abnormalities: visible coolant stains around pipeline joints, rapid decline of liquid level in the auxiliary water tank requiring frequent antifreeze refills, unstable engine water temperature during acceleration, slow warm-up and weak hot air output in the cabin. Severe pipe rupture leads to massive coolant loss and engine overheating damage. Most buyers combine this hose with matched sealing accessories to place unified bulk orders, cutting procurement and international logistics costs and bringing stable profit margins with low year-round inventory turnover pressure for distributors.

100% OEM bending contour, connector size and structural parameter matching, direct plug-in installation without cutting or modification

Manufactured strictly in accordance with Volkswagen Group original ETKA technical standards. The integral pipeline bending radian, quick connector specification at both ends, fixed buckle position and internal flow channel diameter are fully consistent with genuine 8K0121081AB, interchange cross-reference OE codes include 8K0121081S, 8K0121081AC, 8K0121081BB for compatible replacement.

No pipeline trimming or adapter adjustment is required during replacement. It can be directly plugged into the original expansion tank and radiator interfaces, perfectly matching factory assembly layout and drastically shortening cooling system disassembly and maintenance working hours.

Main applicable models: Audi A5 / A5 Quattro, S5 B8 chassis (2008-2016), A4 B8 2.0T shared platform vehicles

Matching power units: 2.0T EA888 turbocharged gasoline engines, 3.0T supercharged engines for S5

Compatible extended models: Audi Q5 8R chassis with identical overflow pipeline structure

Installation position: Overflow connecting pipe between radiator and coolant expansion reservoir

Optimized durable structural design
  1. Composite thermoplastic + inner EPDM double-layer reinforced pipeline: Outstanding heat resistance, anti-aging and coolant corrosion resistance, keep rigid and crack-free under -40℃ to 130℃ alternating temperature environment
  2. Integrated one-click quick connectors at two ends: Tight clamping fit with original tank and radiator ports, effectively prevent liquid leakage at connection positions
  3. Reserved positioning limit buckle: Fix pipeline position firmly to avoid friction abrasion against surrounding engine components
  4. Smooth inner flow channel without dead angles, reduce sludge accumulation and pipeline blockage risk
  5. Complete single-piece finished pipeline assembly, ready for direct replacement installation

    Core engine cooling protection functions
  6. Transport redundant coolant from radiator to expansion tank when engine temperature rises, balance liquid capacity of the whole cooling circuit
  7. Automatically supply coolant back to radiator when temperature drops to eliminate air lock and stabilize engine operating temperature
  8. Release tiny excess pressure generated by coolant thermal expansion to protect expansion tank and main cooling hoses from bulging and cracking
  9. Maintain full sealing of the overflow loop to avoid continuous coolant loss and potential engine overheating hazards

    Common solvable vehicle faults
  • Sweet-smelling coolant seepage marks and liquid stains around the expansion tank pipeline
  • Expansion tank liquid level drops rapidly, requiring frequent manual antifreeze topping-up
  • Engine temperature gauge fluctuates irregularly during high-speed or climbing driving
  • Long idle warm-up time, weak and intermittent hot air blown out from air outlets
  • Cooling rubber main pipes show obvious bulging due to unbalanced system pressure

    Factory testing and stable spot supply

    Each expansion tank hose passes hydraulic burst pressure test, liquid tightness leakage test, high-low temperature cyclic aging test and long-cycle vibration durability test before delivery, fully complying with IATF 16949 international automotive industry quality certification standards.

    Sufficient spot inventory supports mixed purchase with expansion tank caps, assorted cooling rubber hoses, plastic pipe clamps and complete Audi A5/S5 cooling system maintenance kits. Neutral export carton packaging and private label OEM customized labeling services are available for global wholesale purchasers.





Company Details

Bronze Gleitlager

,

Bronze Sleeve Bushings

 and 

Graphite Plugged Bushings

 from Quality China Factory

  • Business Type:

    Manufacturer

  • Year Established:

    2008

  • Total Annual:

    10000000-50000000

  • Employee Number:

    150~200

  • Ecer Certification：

    Verified Supplier

Boigevis trading （GuangZhou）Co., Ltd is a company specializing in the sale of engine parts. Our main service models are Germany car. We have been focus on engine parts for many years and are the Leading global engine system integrator. Both research and development and sales are among the best ... Boigevis trading （GuangZhou）Co., Ltd is a company specializing in the sale of engine parts. Our main service models are Germany car. We have been focus on engine parts for many years and are the Leading global engine system integrator. Both research and development and sales are among the best ...

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Get in touch with us

  • Reach Us
  • Boigevis Trading (guangzhou) Co., Ltd.
  • A012, Liyuan Plaza, Yongfu Road, Yuexiu District, Guangzhou City, Guangdong Province, China
  • https://www.boigevis.com/

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