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This hydraulic timing chain tensioner with OE number 079109218D is a direct OEM replacement specially engineered for Audi A6 C6 (4F chassis) equipped with 4.2L V8 gasoline engines (BBK, BAT, BHF, BAS). All external dimensions, thread parameters, internal one-way valve structure and spring tension strictly match factory original standards, supporting direct plug-and-play installation without grinding or adjustment during timing system overhaul.
High-strength forged alloy steel housing with anti-rust treatment
The tensioner body adopts precision forging high-carbon alloy steel, surface passivation anti-corrosion treatment to resist long-term erosion of high-temperature engine oil inside V8 engine compartments. Thickened thread wall prevents sliding during disassembly and assembly; built-in high fatigue-resistant spiral spring maintains constant pre-tension after thousands of cold start cycles, effectively solving timing chain slack, elongation and abnormal vibration of original aging tensioners.
Upgraded one-way hydraulic valve to eliminate cold start rattle
Optimized internal hydraulic damping and one-way check valve structure, which rapidly builds stable oil pressure within 2 seconds after cold startup to eliminate obvious rattling and ticking noise from the engine bay. The hydraulic buffer absorbs chain vibration during acceleration, deceleration and high-speed cruising, effectively limiting the risk of timing chain jumping teeth, and avoiding severe engine damage such as valve and piston collision caused by timing disorder.
Wide compatible vehicle range for VAG 4.2 V8 platform
Main applicable models:
Audi A6 C6 Sedan/Avant/Allroad quattro 4.2 V8
Audi S4 B6/B7 4.2 V8
Audi A8 D3 4.2 V8
Porsche Cayenne 4.2 V8 gasoline
Perfect matching with timing chain guides, cylinder head mounting holes and camshaft timing chains, no auxiliary gaskets or modification needed during assembly.
Each tensioner undergoes hydraulic pressure retention test, high-low temperature engine oil immersion aging test, spring compression fatigue cycle test before delivery. It thoroughly fixes typical timing system faults of A6 C6 4.2 V8: cold start chain ticking, unstable idle speed, power attenuation, engine fault light activation and hidden danger of chain jumping teeth.
We support one-stop bulk procurement, flexible MOQ, customizable neutral export packaging, stable spot inventory and 12-month quality warranty, serving global Audi luxury car repair shops and cross-border auto parts distributors.
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 ...
