Original 73L Enlarged Fuel Tank (Fuel Tank with Lines) – 4K8201021DG / 4K8201060CP

Original factory fuel tank in the enlarged 73-liter version (complete plastic fuel tank with ventilation manifold and connection ports – Kraftstoffbehälter 73L / Kraftstofftank Benzin), designed for Audi A7 Sportback, S7 and RS7 (4K / 4K8 generation) manufactured from model year 2018 to 2026, particularly for the 3.0 V6 TFSI (55 TFSI / 340 hp) petrol versions, S7 and RS7 models, and selected versions with Mild Hybrid (MHEV 48V) installation and quattro drive, based on the modular longitudinal platform MLBevo.

Original VAG fuel system component designed for the enlarged tank option (PR code: 0M5 – 73-liter fuel tank). Manufactured using multi-layer compression molding technology from high-density high-molecular-weight polyethylene (HDPE/EVOH), ensuring zero hydrocarbon vapor permeability, resistance to stone impacts, fuel biocontent, and extreme temperatures. It features a specially shaped saddle profile (two-chamber) with a deep central tunnel for the quattro drive shaft and factory embossings for the fuel pump module and 48V battery installation. It is responsible for the safe storage of fuel and the optimal balance of the vehicle's rear axle.

Technical specifications:

• Catalog part number (OE body / assembly): 4K8201021DG / 4K8 201 021 DG and related / mounting number 4K8201060CP / 4K8 201 060 CP (related revisions from the 4K8201021, 4K8201060 series with letter suffixes for the PR-0M5 package)

• System / Category: Fuel supply system / Fuel tanks, tanks, petrol fuel supply chambers (Fuel Tank 73 Liters / Kraftstoffbehälter)

• Tank capacity: 73 liters (enlarged version – PR-0M5 equipment code)

• Fuel type: Petrol (TFSI)

• Design: Two-sided saddle profile (Saddle Tank) with a tunnel for the quattro drive shaft

• Material: Multi-layer HDPE technical polymer with an EVOH anti-diffusion barrier

• Body equipment: Factory integrated overflow/ventilation lines, fuel pump cage mounting socket, mounting points for load-bearing straps and heat shields

• Mounting location: Vehicle chassis – rear area under the floor (in front of the rear axle)

• Dedicated model: Audi A7 Sportback / S7 / RS7 (type 4K8) – particularly 3.0 TFSI 55 TFSI quattro petrol versions

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

• Condition: Original used part (100% functional – in very good condition, body fully sealed, no cracks, no deep dents or abrasions on the underside, fuel pump nut flange undamaged, ventilation ports and connections fully intact)

• Manufacturer: Kautex / Audi AG / VAG (Original OEM)

Main application:

• Audi:

  • A7 Sportback (type 4K8) – model years 2018 to 2026 (3.0 V6 TFSI / 55 TFSI quattro engines, S7, RS7 with 73L PR-0M5 tank)

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

  • RS7 Sportback (type 4K8) – model years 2019 to 2026 (4.0 V8 TFSI)

Fitment guarantee and VIN verification

Every fuel tank undergoes a pressure leak test, fuel pump socket thread inspection, and ventilation port patency check before preparation for shipping.

Fitment / installation note: The initial designation 4K8 (fuel system group 201 / 021 / 060) with suffixes DG / CP specifies the enlarged 73L (PR-0M5) variant adapted for TFSI petrol engines and the specific floor layout of the Audi A7 Sportback with quattro drive and MHEV battery in the trunk. The standard tank has a capacity of 63 liters (PR-0M4) and a slightly different side chamber profile. In the event of accident damage or driving over sharp obstacles, the plastic shell may be crushed or develop microcracks at the welds, causing fuel vapor system (EVAP) leakage errors and a petrol smell around the car. The offered tank is 100% sealed and ready for direct installation using the factory load-bearing clamps. Before purchase, we recommend verifying the tank capacity code (PR-0M5) on the sticker in the trunk or checking it using the vehicle's VIN.