VAG 4G0201317A FUEL FILTER

Name: VAG 4G0201317A FUEL FILTER
Brand: VAG
SKU: 4G0201317A
Price: 14.66 USD
Availability: InStock
Rating: 2 (1 reviews)

Product Specifications

Product quality

OEM Equivalent Grade

starstarstar

100 sold

Wholesale price USD $14.66

Wholesale price CNY ¥99.6

bolt MOQ (Minimal order)

50 pcs

local_shipping Production time

20-45 days

package_2 Shipping Weight: 0.5 kg

add_shopping_cart BUY NOW

swap_horiz Application (cross references) 2

expand_more

VAG	4G0201317A
VAG	4G0201317B

Overview & Operating Principle

▲

The FUEL FILTER is a filtration element installed in the fuel delivery circuit between the fuel tank and the fuel injectors that removes particulate contamination, water, and microbial growth from the fuel before it reaches the high-precision components of the injection system. On petrol engines the filter is typically a pleated paper or synthetic element rated at 10–30 microns, installed either inline in the underbody fuel line or integrated into the in-tank fuel pump module. On diesel engines filtration demands are significantly higher — diesel injection systems operate at pressures up to 2,000 bar in common rail designs, and injector nozzle clearances are measured in single-digit microns; diesel fuel filters therefore incorporate a primary element rated at 10–30 microns combined with a water separator bowl that collects emulsified water before it reaches the injection pump and injectors, where it would cause immediate corrosion damage.

This unit — VAG 4G0201317A — is manufactured to OEM-equivalent specifications: filter medium grade and micron rating, housing thread size or cartridge dimensions, water separator bowl capacity where applicable, flow rate at rated differential pressure, and end fitting port sizes are matched to the original part. Supplied as a direct replacement for standard fitment. Available wholesale from 14.66 USD, MOQ 50 pcs, production lead time 20-45 days.

Fuel filter restriction develops progressively as the element captures particulates and wax crystals — diesel filters are particularly susceptible to wax plugging in cold weather when fuel quality is marginal. A partially blocked filter forces the fuel pump to work against elevated backpressure, accelerating pump wear and reducing flow rate at high engine loads. Replace at the OEM-specified interval regardless of symptoms — a filter that has not yet caused driveable symptoms may already be forcing the pump to operate at the limit of its capacity, shortening pump service life significantly.

Symptoms & Diagnostics

▲

Loss of power under load or at high speed — the filter cannot supply sufficient fuel flow at peak demand; fault codes P0087 (fuel rail pressure too low) or P0191 may be stored; the fault typically worsens as the engine reaches operating temperature and fuel demand increases.

Hard start or extended cranking before the engine fires — a heavily restricted filter reduces residual fuel line pressure after shutdown; the pump must refill the system before adequate rail pressure is established for injection, delaying startup particularly on cold mornings.

Engine hesitation, flat spots, or stumbling during acceleration — intermittent fuel starvation as the restricted filter cannot maintain consistent rail pressure during rapid throttle openings; the fault is more pronounced at high engine loads than at steady cruise.

Diesel water separator warning light illuminated — the water separator bowl has reached capacity and must be drained or the filter replaced immediately; water entering the injection pump or common rail injectors causes rapid and expensive corrosion damage within a short operating period.

Engine running rough or misfiring across all cylinders in cold weather on a diesel — wax crystal formation in a marginal or overdue diesel filter blocking fuel flow at low temperatures; the fault typically clears as the fuel warms but will recur at each cold start until the filter is replaced.

Fuel pump noise increasing or fuel pump relay cycling abnormally — the pump is working against excessive backpressure caused by filter restriction, drawing higher current and running hotter than normal; replace the filter before the pump fails to avoid a combined filter and pump replacement.

Logistics & Customs

▲

International HS Code

8421.23

EAEU Customs Code (TN VED)

8421 23 000 0

Typical Net Weight

0.5 kg

Country of Manufacture

China

Standard MOQ

50 pcs

Production Lead Time

20-45 days

Always verify the exact 8-digit or 10-digit subheading with your customs broker for the destination country, as tariff schedules and duty rates vary by jurisdiction.

Installation Tips

▲

Depressurise the fuel system before disconnecting any fuel line — locate and remove the fuel pump fuse or relay, crank the engine until it stalls, then crank once more to bleed residual pressure. On diesel common rail systems rail pressure can exceed 1,500 bar when the engine is stopped — wait at least 30 seconds after shutdown before loosening any fuel line fitting. Disconnect the negative battery terminal before beginning work.
Position absorbent cloths and a suitable fuel container under the filter before disconnecting the inlet and outlet lines — residual fuel in the filter housing and lines will drain immediately on disconnection. Work in a well-ventilated area away from ignition sources; petrol vapour is heavier than air and accumulates at ground level.
Note the flow direction arrow on the filter body before removal and confirm the replacement is installed in the same orientation — fuel filters are directional; installing in reverse forces fuel through the filter medium against its designed flow direction, reducing filtration efficiency and increasing pressure drop across the element.
Replace all sealing washers, O-rings, and banjo bolt copper washers supplied with the new filter or available as a separate seal kit — reusing old seals on a pressurised fuel system is a fire risk. On diesel filters with a water separator bowl, inspect the bowl drain valve and replace if the seal shows cracking or the valve does not close positively.
On diesel filters with a manual priming pump, prime the system by pumping until firm resistance is felt before attempting to start the engine — a diesel injection system run dry of fuel will introduce air into the high-pressure pump, requiring extended cranking or a bleed procedure to purge before the engine will start.
Install the new FUEL FILTER (VAG 4G0201317A), tighten all fittings to OEM specification, reconnect the battery and fuel pump fuse, cycle the ignition key to ON three times for 5 seconds each cycle to prime the system, then start the engine and inspect all disturbed connections for fuel leaks before returning the vehicle to service.

Tools: fuel line disconnect tool set, absorbent cloths, fuel container, torque wrench for banjo bolts and filter housing, manual priming pump (diesel), OBD-II scanner for fault code clearance.

Frequently Asked Questions

▲

How often should the fuel filter be replaced, and does the interval differ between petrol and diesel?

Replacement intervals differ significantly by fuel type and system design. External inline petrol filters are typically replaced every 30,000–60,000 km; in-tank petrol filters integrated into the pump module are often rated as lifetime items but should be inspected if fuel contamination is suspected. Diesel fuel filters require more frequent replacement — typically every 15,000–30,000 km — due to the higher filtration demands of common rail injection and the need to manage water content. In regions with lower fuel quality standards, halve all intervals. ok.parts supplies fuel filters at wholesale MOQ from 14.66 USD per unit for fleet and workshop stocking.

Is air bleeding required after replacing a fuel filter, and how is it performed?

Petrol systems self-prime on ignition cycle — cycle the ignition key to ON for 5 seconds and back to OFF three to five times before cranking to allow the pump to fill the new filter and fuel lines without cranking the engine dry. Diesel systems require active bleeding: on filters with a manual priming pump, pump until firm resistance confirms the filter is full and air-free; on systems without a manual pump, use an electric priming pump or the vehicle's own fuel pump activated by cycling the ignition. A diesel engine cranked with an air-filled high-pressure pump risks immediate damage to the pump's precision components.

How does the OEM-equivalent aftermarket unit compare to the genuine OEM part?

OEM-equivalent units in this catalogue replicate the current OEM design geometry and material specification. Quality is verified against OEM cross-reference data. When ordering in bulk, confirm with our team that the specification matches the latest OEM revision for your application.

Is white-label or custom packaging available for wholesale orders?

Yes. ok.parts works directly with the manufacturing facility and can accommodate neutral white-label packaging or fully branded packaging with your company logo, part numbers, and barcode. Minimum order quantities and lead times for custom packaging may differ from standard stock. Contact the team via the inquiry form to discuss your specific requirements.

Frequently Replaced Together

Part	Reason for Combined Replacement
Fuel Pump OEM ref. varies by application	A clogged fuel filter is the primary cause of premature fuel pump failure — the pump works against excessive backpressure, overheats, and wears rapidly. When replacing a filter that was significantly overdue or a pump that has failed, always replace both simultaneously. Installing a new pump behind an old restricted filter will shorten the new pump's service life to a fraction of its rated mileage.
Fuel Injectors OEM ref. varies by engine	A filter that has been operating in bypass mode or has failed to remove fine particulates allows abrasive contamination to reach the injector nozzles, causing premature wear of the needle seat and spray holes. If injector fault codes or uneven fuelling are present alongside filter restriction, inspect and clean or replace injectors to restore correct spray pattern and fuel metering.
Fuel Filter Seal Kit O-rings and sealing washers, application-specific	Banjo bolt copper washers, O-ring seals, and water separator drain valve seals must be replaced every time the fuel filter is serviced. Reusing compressed or fuel-swollen seals on a high-pressure fuel system is a fire risk. Always fit new seals from the kit supplied with the filter or sourced separately — never reuse fuel system sealing elements.