This guide covers an engine-oil and filter change on a North American 2006 BMW 325i E90 sedan with the naturally aspirated 3.0L N52B30 engine. It is for the rear-wheel-drive 325i sedan—not the 325xi, wagon, coupe, convertible, later turbo engines or an engine swap. A maintenance reminder or dark oil does not diagnose an engine problem, and there is no dedicated OBD-II code that says the oil or filter must be changed.
Beginner–intermediate
60–90 minutes, including checks
$70–$120 for filter and approved oil
Featured filter: genuine BMW 11427953129
Brand: BMW. Manufacturer part number: 11427953129 (11 42 7 953 129). Amazon ASIN: B07CSNND74. Selected variation: one oil-filter element set. The Amazon listing verifies one item and calls it a set, but its package list says only “Auto part”; it does not itemize every seal or washer. Before draining the engine, open the package and confirm that you have the cartridge, the correct oil-filter-cap sealing rings and a new drain-plug sealing ring. Do not reuse a flattened, cut or missing seal.
View the BMW oil-filter element
The exact Amazon product page displayed “900+ bought in past month” on October 23, 2026. This is Amazon’s rounded recent-purchase indicator, not audited sales data. Price, seller and availability can change, so check the current listing.
Fitment and exclusions
| Application | Engine / body | Included here | Important exclusions |
|---|---|---|---|
| 2006 BMW 325i, North America | E90 sedan, rear-wheel drive, 3.0L N52B30 gasoline inline-six | Oil/filter service using BMW filter set 11427953129; 6.5 L / 6.9 US qt refill with filter; M12 drain plug | 325xi/xDrive, E91 wagon, E92 coupe, E93 convertible, non-North-American engines, swaps, damaged or aftermarket filter housings |
BMW’s parts catalog identifies 11427953129 as the service oil-filter element for the E90 325i and as the replacement for earlier numbers 11427541827, 11427566327 and 11428683196. Confirm the VIN, engine label, existing filter dimensions and housing before purchase. If your car has a different drain-plug thread, housing or engine, stop and use the service information for that configuration.
Service checks and diagnosis before draining
- Normal maintenance: Use the vehicle’s Condition Based Service display and documented service history. Do not rely on oil color alone.
- Red oil-pressure warning: Shut the engine off promptly. An oil change does not diagnose low pressure; the cause can be low level, a leak, a sensor or switch fault, wiring, a pickup restriction, pump trouble or internal wear.
- Oil on the filter housing: Clean and inspect before blaming the cap seal. N52 engines can also leak from the oil-filter-housing-to-cylinder-head gasket, valve-cover area or other adjacent seals. This guide changes only the service filter and cap seals.
- Metal particles, coolant-like sludge or strong fuel odor: Pause and obtain professional diagnosis rather than assuming fresh oil will correct the condition.
- No dedicated code: Generic powertrain codes do not prove that the oil or filter caused a fault. Diagnose codes separately.
Tools and supplies
Required items are marked below. Check tools you already own before buying. The car must be secure and level for the final electronic oil-level check.
| Tool or Supply | Exact Product | Product Link | Purpose and Selection Check |
|---|---|---|---|
| Oil filter — required | BMW 11427953129, one filter set | View filter | Confirm filter and seals against the removed parts before installation. |
| Engine oil — required | Mobil 1 FS European Car Formula 0W-40, 5-quart jug, ASIN B00HG76A9A; buy at least 7 US qt total | View approved oil | Mobil currently lists BMW Longlife-01 approval. Two 5-quart jugs provide enough for the 6.9-quart service and leave spare oil. Recheck the current bottle label. |
| Filter-cap wrench — required | CTA Tools 2489, 86 mm × 16-flute cap wrench, ASIN B006VMXMQK | View cap wrench | CTA cross-references BMW special tool 11 9 240. It fits the smooth, 16-flute cap; do not use if the installed cap differs. |
| Torque wrench — required | TEKTON TRQ51402, 3/8-inch drive, 10–100 ft-lb, ASIN B0FYHB7XBQ | View torque wrench | The verified 25 N·m specifications equal about 18.4 ft-lb and fall within this range. Use according to its instructions and never as a breaker bar. |
| Drain pan — required | Oil-resistant pan with at least 8-quart usable capacity and a sealable transport container | Use a suitable pan you already own | The engine holds 6.9 quarts with the filter, so leave headroom for splashing and movement. |
| Metric hand tools — required | Correctly fitting socket/bit for the installed drain plug, ratchet and trim tool for the service flap | Use inspected tools you already own | Confirm the actual plug head before choosing a socket. Do not substitute pliers or a loose-fitting tool. |
| Vehicle supports — required if access needs lifting | Properly rated low-profile jack plus matched stands suitable for BMW-approved support points | Use inspected lifting equipment you already own | A jack lifts; stands support. Verify capacity, saddle contact and stable placement on hard, level ground. |
| Consumables — required | New cap O-rings/seals and new drain-plug sealing ring matching the removed hardware; nitrile/heat-resistant gloves; shop towels | Confirm package contents before starting | BMW’s procedure requires new seals. Never install a seal in the wrong cap groove. |
Estimated DIY cost versus a shop
DIY estimate: about $15–$25 for the filter set, $55–$90 for enough BMW Longlife-01-approved oil, and $0–$15 for seals or disposal supplies if not included. Tools can add $40–$200+ if you do not already own safe lifting equipment, a torque wrench and a cap socket. Professional estimate: roughly $120–$250 for a routine oil and filter service, depending on oil brand, labor rate and inspection package. These are planning ranges—not live Amazon prices or a local quote.
2006 BMW 325i N52 oil and filter change
- Verify the vehicle and parts. Confirm the VIN identifies a 2006 North American 325i E90 sedan with the N52B30 and rear-wheel drive. Compare the new filter and every seal with the existing hardware. Have at least 6.9 US quarts (6.5 liters) of BMW Longlife-01-approved oil available.
- Warm the engine, then shut it off. BMW specifies service at operating temperature. Warm the car normally, park on a hard level surface, set the parking brake, switch the engine off and remove the key. Wait only as needed to handle the car safely; the oil remains hot.
- Secure access. Chock the wheels. If you cannot reach the underbody service opening safely at normal ride height, lift at an approved point and place the car securely on correctly rated stands. Give the car a controlled stability check before going underneath.
- Protect the belt drive and loosen the filter cap. Cover the nearby belt area against oil contamination without leaving anything near moving parts. Use the 86 mm, 16-flute cap tool to release the filter cover. Let the housing oil drain back toward the sump. Remove the cap and cartridge, keeping oil off the belt.
- Open the underbody service flap. Position an oil-resistant drain pan with more than 6.9-quart capacity below the sump plug. Account for the oil stream moving outward as the plug releases.
- Drain the hot oil. Remove the M12 × 1.5 sump drain plug with the correctly fitting tool. Keep fingers out of the stream and let the oil drain completely. Inspect the plug and threads. If threads are damaged, stop; do not force the plug back into the aluminum sump.
- Renew the drain seal and reinstall the plug. Fit a new matching sealing ring. Start the plug by hand so it cannot cross-thread, then tighten the verified M12 drain plug to 25 N·m (18.4 ft-lb). Do not exceed the specification.
- Renew the filter and cap seals. Pull the old cartridge straight from the cap. Remove each old O-ring without scratching the plastic grooves. Match the new rings to the originals, install them in their correct grooves and coat them lightly with fresh engine oil. Push the new cartridge into the cap in the same orientation as the removed filter.
- Install the filter cap. Thread the cap by hand until it seats without binding. Tighten the cap to 25 N·m (18.4 ft-lb) with the 86 mm tool. The O-ring seals the housing; extra torque can crack the cap or housing.
- Close the service opening and lower the car. Wipe spilled oil, remove the drain pan and refit the underbody flap. Remove tools from below the car and lower it following the lifting-equipment instructions. The car must be level for filling and final measurement.
- Refill with the exact capacity. Remove the oil filler cap and add the specified 6.5 liters / 6.9 US quarts with filter of approved oil using a clean funnel. Avoid overfilling. Reinstall the filler cap.
- Build pressure and inspect. Start the engine and let it idle only until the oil-pressure warning lamp goes out. If it stays on, shut the engine off immediately. Switch off and inspect the filter cap and sump plug for leaks. Correct any leak before driving.
- Perform BMW’s electronic level check. With the vehicle level and the engine at normal operating temperature, BMW directs running the engine for three minutes at about 1,100 rpm, then reading the electronic level in the instrument cluster or Control Display. Add only small measured amounts if requested, recheck, and never overfill.
- Finish and document. Reinspect after a short drive, record the date, mileage, oil approval and filter part number, and recycle the used oil and filter. Reset the CBS oil-service reminder only after the service and leak checks are complete, using the instructions for the exact cluster/iDrive version.
Final inspection
- No oil-pressure warning remains after startup.
- The filter cap and sump plug are dry at idle and after a short drive.
- The electronic oil level reads in the acceptable range on level ground.
- The filler cap, underbody service flap and any removed shields are secure.
- No oil reached the serpentine belt or nearby rubber components.
- Used oil is sealed for recycling, and the service is documented.
Common mistakes
- Reusing or misplacing O-rings: Remove every old seal and install the new ones in the same grooves, lightly oiled.
- Overtightening the plastic cap: Stop at 25 N·m. The cap is not sealed by brute force.
- Guessing the drain-plug torque: This guide’s 25 N·m applies to the verified N52 M12 × 1.5 plug. Stop if your hardware differs.
- Filling while the car is tilted: Lower the car and make the electronic check on level ground.
- Dumping in seven full quarts without measuring: The service capacity is 6.9 US quarts. Measure the fill and use the electronic check.
- Resetting CBS before verification: A reset cannot fix a leak, incorrect level or pressure problem.
FAQ
How much oil does a 2006 BMW 325i N52 take with a filter?
The verified service capacity is 6.5 liters, or approximately 6.9 US quarts, with the filter. Measure the fill and complete the electronic level check.
What oil specification should I use?
Use an oil carrying BMW Longlife-01 approval for this North American gasoline application. The linked Mobil 1 FS 0W-40 currently lists that approval; verify the current bottle label because formulations and approvals can change.
Does this guide cover the 2006 325xi?
No. The filter may cross-fit, but the all-wheel-drive underbody and oil-pan access are outside this exact procedure. Use 325xi-specific service information.
Can I replace only the filter without draining the oil?
The filter cap is above the sump, but this page is a complete scheduled oil-and-filter service. If you are correcting a separate filter issue, verify the oil level, contamination risk and exact service procedure before opening the housing.
Why does the electronic oil level take time to update?
The N52 uses an electronic level measurement rather than a traditional dipstick. Follow the level-ground and temperature conditions; do not add oil repeatedly while the system is still measuring.
What if the oil-pressure warning stays on?
Shut the engine off. Check the level and for major leakage, then obtain diagnosis. Do not keep running the engine or assume a new filter will resolve pressure loss.
Sources and related BMW guides
- BMW parts catalog diagram: E90 325i engine-oil maintenance service and filter 11427953129
- BMW service-manual procedure: 2006 325i E90 N52 engine-oil service
- BMW TIS torque table: N52 M12 × 1.5 drain plug, 25 N·m
- BMW TIS torque table: N52 oil-filter cap, 25 N·m
- Mobil product data: FS European Car Formula 0W-40 and BMW Longlife-01 approval
- 2006–2011 BMW E90 sedan cabin-air-filter replacement
- 2006–2011 BMW E90 3.0L engine-air-filter replacement
- BMW 3 Series repair guide hub
- BMW 3 Series mechanic chatroom
Photo credit: National Highway Traffic Safety Administration, via Wikimedia Commons. Public-domain U.S. federal-government work. The hosted copy is used only as a labeled vehicle reference.