OEM & Private Label
WK 842/21 X Fuel Filter
The NAKATU WK 842/21 X is an aftermarket in-line diesel fuel filter, a replacement for the MANN-FILTER WK 842/21 X. It helps capture dirt, rust particles and other contaminants from diesel fuel in compatible filtration systems. Published applications include selected Audi A4, A4 Cabriolet (B6/B7) and A6 (C6) vehicles equipped with 2.0 TDI engines. Please confirm the fuel line connections, filter size, engine code and original equipment part number before ordering.
Specifications
- Model:
- NAKATU WK 842/21 X Fuel Filter
- Product Type:
- fuel filter
- Replaces:
- Bosch 0 450 906 429; MAHLE KL 554; Hengst H223WK; FILTRON PP 839/10; WIX WF8389; Delphi HDF595; UFI 24.451.00; FRAM P10196; Purflux FCS732
- Applicable engine number:
- Audi A4 B6/B7 (8E/8H), A4 Cabriolet, A6 C6 (4F); 2.0 TDI engines BLB, BNA, BPW, BRF, BRE, BRC, BRD, BVA, BVF, BVG, CAGB. Verify VIN, engine code and model year.
- Key Specifications:
- Height: 133 mm (5.24 in) Largest Outside Diameter: 80 mm (3.15 in) Inlet Diameter: 10 mm (0.39 in) Outlet Diameter: 10 mm (0.39 in)
- OEM Part Numbers:
- VW Group / Audi 8E0 127 401, 8E0 127 401D, 8E0 127 435 A
Product Overview
The NAKATU WK 842/21 X is an aftermarket in-line diesel fuel filter intended as a replacement for MANN-FILTER WK 842/21 X. It is designed for compatible diesel fuel systems requiring the WK 842/21 X reference specification.
The filter helps capture dirt, rust particles and other particulate contaminants from diesel fuel before they reach sensitive fuel injection components. The original MANN-FILTER product is primarily associated with selected Audi A4 and A6 vehicles equipped with 2.0 TDI diesel engines.
Key Features
- In-line diesel fuel filter configuration
- Helps capture particulate contamination from diesel fuel
- Intended for compatible diesel engine fuel filtration systems
- MANN-FILTER reference height: 133 mm (5.24 in)
- MANN-FILTER reference outside diameter: 80 mm (3.15 in)
- MANN-FILTER reference inlet diameter: 10 mm (0.39 in)
- MANN-FILTER reference outlet diameter: 10 mm (0.39 in)
- Original MANN-FILTER product supplied with a gasket
- No conventional spin-on mounting thread
- Verify connection layout, sealing arrangement and installation orientation
These dimensions describe the original MANN-FILTER reference product. Actual NAKATU dimensions, filtration efficiency, media construction, pressure drop and sealing performance require independent confirmation.
Applications
MANN-FILTER lists WK 842/21 X for selected Audi A4 and A4 Cabriolet vehicles in the 8E/8H B6 and B7 series, including 2.0 TDI variants.
Published engine codes for the A4 family include BLB, BNA, BPW, BRF, BRE, BRC, BRD, BVA, BVF and BVG, depending on the specific model and production year.
Additional applications include selected Audi A6 4F/C6 2.0 TDI vehicles equipped with BLB, BRE, BNA, BRF, BVG and CAGB engine configurations.
The original MANN-FILTER catalog covers certain applications produced between 2004 and 2011, depending on the model and engine code.
Exact compatibility depends on the vehicle identification number, engine code, model year, fuel line connections and original equipment part number.
Why Choose NAKATU?
NAKATU is an independent aftermarket filtration brand and supplier focused on replacement filters for commercial vehicles, heavy-duty trucks, construction machinery, agricultural equipment and industrial diesel engines.
Our product range includes diesel fuel filters, fuel-water separators, engine oil filters, air filters and hydraulic filters.
We support international importers, distributors, wholesalers and vehicle parts suppliers with product selection, cross-reference assistance, wholesale quotations and bulk purchasing arrangements.
Cooperation options include OEM projects, private-label programs, customized packaging and export-oriented procurement services, subject to confirmed technical specifications and order quantities.
NAKATU aims to develop long-term global B2B relationships through responsive communication, practical application guidance and flexible sourcing services.
Quality & Supply Assurance
Product specifications, connection dimensions and application requirements should be confirmed before order placement.
Sample approval, inspection arrangements, labeling, packaging specifications and shipment terms can be discussed according to customer needs.
For wholesale orders, customers should verify inlet and outlet dimensions, fuel line connection arrangements, gasket configuration, filtration requirements and compatibility with the original vehicle fuel system.
Actual NAKATU product specifications should be confirmed using approved samples or technical documentation.
Disclaimer
MANN-FILTER, MANN+HUMMEL, Audi, Volkswagen, Bosch, MAHLE and other third-party brand names and part numbers are used solely for product identification and compatibility reference.
NAKATU is an independent aftermarket filtration brand and supplier and is not affiliated with, authorized by, sponsored by or endorsed by these manufacturers.
Original MANN-FILTER specifications do not establish equivalent NAKATU filtration performance.
Always verify the original part number, vehicle identification number, fuel line connections and technical requirements before ordering.
