Factory maintenance schedule OEM · verified
Normal service, condensed from the factory interval matrix.
| Every 100,000 mi | Oxygen Sensor (replace) |
Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1998 Z3 2.3.
The 1998 BMW Z3 2.3 rides on the E36 platform, carrying a maintenance specification of 5.3 quarts of oil meeting 15W-40, 10W-40, or 10W-30 API SJ standards. Reliability data positions this model year toward the more stable end of the range, with only 33 logged owner complaints—concentrated chiefly in seat-related areas—and a single recall on file, indicating a mechanical profile largely free of systemic defects for researchers examining this generation.
Fluid capacities, tune-up values and fuel economy at a glance.
Replacement part sizes and factory part numbers — battery, bulbs, filters and belts.
From the factory this vehicle uses a BCI 48 · 650 CCA battery, RELAY low-beam bulbs, OE oil filter 11421716192. Each part links to every other vehicle that shares it, so a part you already stock may fit more of your fleet than you'd expect.
| Engine oil filter | 11421716192 alt 11421709800 |
| Engine air filter | 13721247404 alt 13721730449 |
| Fuel filter | 13321740985 |
| Spark plug | 12129064617 alt 12129063428 |
| Battery | 61217586960 alt 61218381738 |
| Front wiper blades | 61611387678 alt 61619070581 |
| Serpentine belt | 11281437449 alt 11281743193 |
| Thermostat | 11537511083 alt 11537511580 |
Engine, drivetrain, dimensions and economy.
| Overall length | 158.7 in |
| Overall width | 66.5 in |
| Overall height | 50.8 in |
| Wheelbase | 96.5 in |
| Curb weight | 2723 lb |
| Track (front / rear) | 55.5 / 55.9 in |
| Weight distribution (front / rear) | 52/48 |
Capacities, torques and tune-up values from the factory service manual.
This engine holds 5.3 qt of 15W-40 / 10W-40 / 10W-30 API SJ engine oil, DOT 4 brake fluid. Torque lug nuts to 88 ft-lbs, the oil drain plug to 22.0 ft-lbs. The firing order is 1-5-3-6-2-4. Note the cylinder-head bolts finish on a torque angle (torque-to-yield) — they stretch permanently and should be replaced, not reused, during any head service.
| Brake Fluid | DOT 4 |
| Differential Gear Oil Capacity | 2 Pints |
| Engine Coolant | ETHYLENE GLYCOL |
| Engine Oil | 15W-40 · API · 10W-40 · 10W-30 · 5W-30 |
| Engine Oil Capacity | 5.3 qt |
| Engine Oil | 15W-40 · API · 10W-40 · 10W-30 · 5W-30 |
| Engine Oil Capacity | 7.0 qt |
| Engine Oil | 15W-40 · API · 10W-40 · 10W-30 · 5W-30 |
| Engine Flywheel Bolts | 86 ft-lbs |
| Engine Flywheel Bolts | AT: 89 ft-lbs, MT: 78 ft-lbs |
| Engine Oil Pan Drain Plug | 22.0 ft-lbs |
| Engine Oil Pan Drain Plug | M12 Bolts: 18.0, M22 Bolts: 44.0 ft-lbs |
| Engine Oil Pan Drain Plug | 22.0 ft-lbs |
| Oil Pump to Cylinder BLock Bolts/Studs | 16 ft-lbs |
| Oil Pump to Cylinder BLock Bolts/Studs | 16 ft-lbs |
| Lug Nuts | 88 ft-lbs |
| Cylinder Firing Order | 1-3-4-2 |
| Cylinder Firing Order | 1-5-3-6-2-4 |
| Ignition Coil Primary Resistance | 0.4-0.8 ohms |
| Spark Plug Manufacturer | BMW |
| Refrigerant | R134a |
| Refrigerant Capacity | 1.75-2.26 lbs |
| Oil Group | PAG |
| Oil Type | 46 |
| Standard BCI Group Number | 48 |
| Standard BCI Cranking Performance | 650 cca |
| Standard BCI Group Number | 48 |
| Standard BCI Cranking Performance | 650 cca |
| Pressure Test | 14.5 psi |
| Radiator Cap Pressure Relief | 13-17 psi |
| Thermostat Opening Temperature | 203 °F |
| Pressure Test | 14.5 psi |
| Radiator Cap Pressure Relief | 13-17 psi |
| Thermostat Opening Temperature | 176 °F |
| Fuel Pump Pressure Minimum | 51.0-58.0 @ idle psi |
| Fuel Pump Pressure Maximum | 65.0-97.0 psi |
| Brake Application | WITH SOLID ROTOR / WITH VENTED ROTOR |
| Torque Caliper to Bracket | 81 ft-lbs / 18-22 ft-lbs |
| Torque to Knuckle | 81-96 ft-lbs / 81 ft-lbs |
| Brake Application | WITH SOLID ROTOR / WITH VENTED ROTOR |
| Torque Caliper to Bracket | 18-22 ft-lbs |
| Torque to Knuckle | 49 ft-lbs |
| Torque Caliper to Bracket | 81 ft-lbs |
| Torque to Knuckle | 81-96 ft-lbs |
| 1 | 4 ft. lbs., Step 1: 4 ft. lbs., Step 3: 70 | 4 ft. lbs |
| 1 | 4 ft. lbs., Step 2: 14 ft. lbs., Step 3: 70 | 4 ft. lbs |
| 1 | 22 ft. lbs. | 22 ft. lbs |
| 2 | 90 degrees | 90 degrees |
| 3 | 90 degrees | 90 degrees |
Prep Cast Iron Engine Block:
| 1 | 22 ft. lbs. | 22 ft. lbs |
| 2 | 90 degrees | 90 degrees |
| 3 | 90 degrees; Aluminum Engine Block: | 90 degrees |
| 1 | 29.5 ft. lbs. | 29.5 ft. lbs |
| 2 | 90 degrees | 90 degrees |
| 3 | 90 | |
| 1 | 22 ft. lbs. | 22 ft. lbs |
| 2 | 90 degrees | 90 degrees |
| 3 | 90 | |
| 1 | 14.5 ft. lbs., Step 2: 50 | 14.5 ft. lbs |
Normal service, condensed from the factory interval matrix.
| Every 100,000 mi | Oxygen Sensor (replace) |
Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.
Owner complaints about the 1998 BMW Z3 2.3 lead in one area — the seats, 8 of 33 reports (24%), well ahead of the next concern. None of this vehicle's 1 recall campaigns target the seats, so those reports read as owner-reported wear-and-tear rather than an acknowledged defect. 2 of the reports describe a crash and 2 a fire — a small share of the total, but worth weighing against the seats pattern above. These are tallies of what owners actually reported to the federal government, not an editorial score — and higher-selling models naturally rack up more reports.
All 33 complaints on record, top 8 components.
Source: NHTSA Office of Defects Investigation complaint database.
Showing 1 of 1 campaigns on record for this vehicle.
CERTAIN PRO-A MOTORS CORNER LAMPS, TURN SIGNALS, AND HEADLIGHTS SOLD AS REPLACEMENT LAMPS FOR USE ON CERTAIN PASSENGER VEHICLES LISTED ABOVE. SOME COMBINATION LAMPS THAT ARE NOT EQUIPPED WITH AMBER SIDE REFLECTORS FAIL… Remedy: PRO-A MOTORS WILL NOTIFY OWNERS AND OFFER TO REPURCHASE THE LAMPS. THE RECALL BEGAN ON APRIL 3, 2006. OWNERS MAY CONTACT PRO-A MOTORS AT 323-838-2988.
Showing 5 of 21 bulletins on record with NHTSA.
| Bulletin | Date | Component | Summary |
|---|---|---|---|
| SI B12 12 10 | 2010-06-01 | Engine And Engine Cooling | BMW: WHEN AT LOWER SPEEDS OR STOPPING THE ENGINE IDLE DIPS TOO LOW BECAUSE OF A SOFTWARE… |
| 620300 | 2000-06-01 | Electrical System | SUBJECT REGARDING SHORT CIRCUIT CAUSING VARIOUS INSTRUMENT CLUSTER FAULTS. *TT |
| 110500 | 2000-06-01 | Engine And Engine Cooling | EXPERIENCING A BUZZING OR RATTLING NOISE HEARD COMING FROM ENGINE COMPARTMENT. *TT |
| 110300 | 2000-05-01 | Engine And Engine Cooling | CONSUMER COMPLAINTS REGARDING COOLANT TEMPERATURE GAUGE FLUCTUATES (IN AND OUT OF RED… |
| 620199 | 1999-06-01 | Fuel System, Other | CONDITIONS WITH FUEL GAUGE READING 1/4 WHEN TANK IS FULL. *TT |
The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.
Decode factory build data for a specific vehicle by VIN.
Find every vehicle that shares this one's battery, bulbs, oil capacity, platform or parts.
Cross-vehicle references for the kinds of data on this page.
5.3 qt of HIGH PERFORMANCE MINERAL OILS: ABOVE 5 degrees F: 15W-40 API SJ, SL OR SM, -5 degreesF TO 68 degrees F: 10W-40 API SJ, SL OR SM, 5 degreesF TO 50 degrees F: 10W-30 API SJ, SL OR SM, BELOW 50 degrees F: 5W-30 API SJ, SL OR SM, BELOW 32 degrees F:, per the factory manual.
NHTSA lists 1 recall campaign(s) for this model year. Check your specific vehicle by VIN.