Original Fuel Tank Strap / Tank Support Bracket (Fuel Tank Mounting Strap) – 4K0201654D

Original factory fuel tank mounting strap to the vehicle floor panel (metal fuel tank support bracket / fuel tank retaining band – Spannband Kraftstoffbehälter / Halteband Kraftstofftank), designed for Audi A7 Sportback, S7 and RS7 (4K / 4K8 generation), as well as Audi A6 C8 (type 4K2 / 4K5 / 4KA) manufactured from 2018 to 2026, including versions with 3.0 V6 TFSI (55 TFSI / 340 hp) and 2.0 TFSI (40/45 TFSI) petrol engines, S7 and RS7 variants, and TDI diesel engines with Mild Hybrid (MHEV 48V) systems and quattro drive, based on the modular MLBevo longitudinal platform.

Original VAG fuel system and chassis structural component. Made of high-quality, resilient structural steel, hot-formed and protected by a factory anti-corrosion coating (KTL cataphoresis) with high resistance to road salt, moisture, mud, and small stone impacts. Equipped with an integrated synthetic rubber vibration-damping pad that isolates the metal strap from the fuel tank's plastic shell. Mounted underneath the chassis, it ensures rigid, gap-free suspension of the fuel tank directly to the longitudinal beams and floor reinforcements, preventing movement under load and eliminating the risk of damaging fuel and vent lines during dynamic driving.

Technical specifications:

• Catalog part number (OE): 4K0201654D / 4K0 201 654 D (and related revisions from the 4K0201654, 4K0201654E, 4K0201654F, 4K0201654A, 4K0201654B series)

• System / Category: Fuel supply system and chassis components / Fuel tanks, support brackets, tank mountings and straps (Fuel Tank Mounting Strap / Halteband Spannband Kraftstofftank)

• Function: Secure, safe and stable suspension and mechanical fastening of the fuel tank to the vehicle floor

• Design: Precisely formed steel strap with factory mounting ears for bolts and a reinforcing embossment

• Surface protection: Factory cataphoresis coating (KTL) protecting against chassis corrosion

• Acoustic and protective insulation: Integrated elastomer rubber insert preventing wear on the fuel tank plastic and damping vibrations

• Mounting location: Vehicle chassis – rear area under the floor (wrapping and supporting the fuel tank body)

• Dedicated model: Audi A7 Sportback / S7 / RS7 (type 4K8) and Audi A6 / Avant / Allroad (type 4K - C8)

• Engine compatibility: 3.0 V6 TFSI (55 TFSI), 2.0 TFSI petrol engines, S7/RS7 variants and 2.0 TDI / 3.0 TDI diesel units (standard or enlarged tank versions in the quattro/MHEV system)

• Steering side: Left-hand drive (LHD) and Right-hand drive (RHD) – universal chassis component

• Condition: Original part, used (100% functional – structurally intact, factory geometry preserved, straight profile without bends, bolt holes aligned and not elongated, protective coating in very good condition without deep pitting corrosion)

• Manufacturer: Audi AG / VAG (OEM Original)

Main application:

• Audi:

  • A7 Sportback (type 4K8) – model years 2018 to 2026 (55 TFSI quattro, S7, RS7 and 40/45 TFSI and TDI models)

  • S7 Sportback (type 4K8) – model years 2019 to 2026

  • RS7 Sportback (type 4K8) – model years 2019 to 2026

  • A6 / A6 Avant / Allroad (type 4K2 / 4K5 / 4KA - C8) – model years 2018 to 2026

  • S6 / RS6 Avant (type 4K - C8) – model years 2019 to 2026

Fitment guarantee and VIN verification

Each fuel tank strap undergoes a precise profile arc geometry check to ensure no post-collision deformation and a mounting ear condition check before preparation for shipping.

Fitment / installation tip: The initial designation 4K0 (fuel system group 201 / 654) with index D defines the mounting strap precisely profiled to fit the fuel tank on the MLBevo platform, with a cutout for the quattro drive shaft and the 48V MHEV traction battery installation. Fuel tank brackets operate in an area directly exposed to water and road salt, which means that during removal attempts (e.g. when replacing the fuel pump, servicing the multi-link suspension or the subframe), bolts can strip the corroded mounting ear. The original OEM strap guarantees even clamping across the entire surface, preventing point stresses on the fuel tank plastic that can cause cheap aftermarket parts to leak. Before purchase, we recommend comparing the letter index of the old strap or verifying it using the vehicle's VIN (63L tank vs enlarged 73L tank).