Custom fields — Product Details

• Article Number: 9F0155 — Ridex in-line fuel filter, an economy-tier OEM-equivalent replacement engineered to BMW factory specifications. Designed for BMW X3 F25 petrol variants — distinct from the Ridex 9F0094 used on diesel sDrive 18d models.
• Filter Type: In-Line Filter — installs in the fuel feed line between the fuel tank and the high-pressure fuel pump. The cylindrical filter housing fits inline with the fuel feed circuit (located underneath the vehicle, near the fuel tank or along the chassis rail).
• Vehicle Configuration Line / Variant: China, Code S1AKA — designated for the China-market production specification of the BMW X3 F25 sDrive 20i. Many F25 vehicles imported to Tanzania come via the China market or share components with that production line, making this filter a likely match for grey-import F25 vehicles in the Tanzanian market.
• Height: 250 mm — overall filter length. Critical dimension for fitment within the OEM bracket location.
• Diameter: 55 mm — outer dimension of the filter housing.
• Inlet Diameter: 9.5 mm — diameter of the fuel inlet port (where unfiltered fuel enters from the tank). Different from the diesel-variant 14.6 mm inlet — confirming this is a petrol-spec filter.
• Outlet Diameter: 8 mm — diameter of the fuel outlet port (where clean fuel exits to the high-pressure pump).
• Return Pipe Connector Diameter: 8 mm — additional connector for the fuel return line. The return-line design is specific to certain F25 fuel system configurations.
• Function: Removes water, rust particles, dirt, and microscopic debris from fuel before it reaches the high-pressure fuel pump and direct injectors. Especially critical on the N20 petrol direct injection engine — modern direct-injection petrol systems operate at high pressures with injector tolerances measured in microns. Even tiny contaminants can score injector internals, causing rough running, misfires, and eventual injector failure (an expensive repair).
• Condition: New — factory-sealed in Ridex packaging.
• Manufacturer: RIDEX — AUTODOC's in-house OEM-equivalent aftermarket brand, produced in IATF 16949, ISO 26262, and VDA 6.3 certified factories.
• OEM Cross-References: BMW 16 12 7 221 846.9, BMW 16 12 7 233 840 — direct equivalents to these original BMW part numbers.
• Vehicle Compatibility: Designed for the BMW X3 F25 sDrive 20i (N20 petrol engine), specifically the China-market production code S1AKA variant. Always verify against your vehicle's VIN or existing filter part number before purchasing — different F25 production codes may use different filter specifications.
• Warning Signs of a Clogged Fuel Filter: Rough idle, hesitation under acceleration, sudden power loss at high speeds, hard starting (especially when warm), and in extreme cases, complete fuel starvation/stalling. If your customer experiences any of these symptoms before the recommended service interval, suspect contamination from poor-quality fuel.
• Installation Note: Fuel filter replacement requires depressurising the fuel system before disconnection — work in a well-ventilated area away from ignition sources. Always replace the sealing O-rings/gaskets at the same time. Job typically requires 30–60 minutes for a competent mechanic.

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