Four-door rear-wheel-drive E46 sedan · 2.5-liter M52TU DOHC inline-six (170 hp / 181 lb-ft)
1999 BMW 323i E46 Sedan
BMW's preserved 1999 U.S. service roster identifies the 323i and its chassis generation as a distinct configuration.
Photo: “1999-2003 BMW 3 Series (E46) coupe 01.jpg” by OSX / Wikimedia Commons — Public domain. Cropped to 16:9.
Factory configuration
What this model is
- Trim
- 323i
- Body style
- Four-door rear-wheel-drive E46 sedan
- Engine
- 2.5-liter M52TU DOHC inline-six (170 hp / 181 lb-ft)
- Transmission
- 5-speed manual or optional 4-speed automatic
The E36/E46 chassis generation is a fitment boundary; do not merge parts by badge or displacement alone.
Configuration-specific ownership
Maintenance for this exact configuration
These items are filtered to the engine, transmission, trim, and model-year applicability recorded for this configuration. Broad Amazon category searches are suppressed here; shopping links appear only beside catalog-backed part numbers.
Service desk
What this car needs & when
Use this as a service-planning checklist for 1999 BMW 323i E46 Sedan. Start with the interval, confirm which engine or configuration you have, then use an exact ordering reference when one is verified.
- Service topics
- 8
- Factory intervals
- 4
- Fitment-scoped
- 8
- Exact references
- 1
Before orderingIdentify your engine, options and build date.Part numbers and sizes can change within one model year. Shopping links appear only for catalog-backed references; still verify the listing against your vehicle before ordering.
Engine oil and filter
Fitment must be confirmed
At each indicated Engine Oil Service and Inspection service; no fixed mileage is claimed.
Source: BMW — 1999 323i sedan (E46) service-indicator schedule, preserved by Operation CHARM · Indicated Engine Oil Service and Inspection I/II · checked
Inspection I
Fitment must be confirmed
Perform when the service indicator calls for Inspection I.
Source: BMW — 1999 323i sedan (E46) service-indicator schedule, preserved by Operation CHARM · Indicated Inspection Service I · checked
Inspection II
Perform when the service indicator calls for Inspection II; includes Inspection I plus the additional published tasks.
Source: BMW — 1999 323i sedan (E46) service-indicator schedule, preserved by Operation CHARM · Indicated Inspection Service II · checked
Microfilters
Fitment must be confirmed
Replace at each indicated Engine Oil Service and Inspection; shorten in dusty operation.
Source: BMW — 1999 323i sedan (E46) service-indicator schedule, preserved by Operation CHARM · Indicated Engine Oil Service and Inspection I — microfilter replacement · checked
Engine air-cleaner element
Exact reference available
Replace at Inspection II; shorten in dusty operation.
Source: BMW — 1999 323i sedan (E46) service-indicator schedule, preserved by Operation CHARM · Indicated Inspection Service II — intake air-cleaner replacement · checked
2.5-liter M52TU DOHC inline-six (170 hp / 181 lb-ft) — K&N 33-2070
K&N 33-2070
Manufacturer-catalog replacement-part fitment only; it does not establish a BMW service interval. Confirm the VIN, production date, engine, and installed filter dimensions before ordering.
Source: K&N — BMW E36 six-cylinder/M3 replacement air-filter listing · 1999 BMW E36 six-cylinder gasoline application — 33-2070 · checked
Verified ordering references
- Validated equivalentK&N 33-2070
Qty. 1 · Panel engine air filter · catalog-listed
Verify the current manufacturer application listing, VIN, production date, and installed dimensions before purchase.
Catalog: K&N — BMW E36 six-cylinder/M3 replacement air-filter listing · 1999 BMW E36 six-cylinder gasoline application — 33-2070 · checked
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2.5-liter M52 DOHC inline-six (168 hp / 181 lb-ft) — K&N 33-2070
K&N 33-2070
Manufacturer-catalog replacement-part fitment only; it does not establish a BMW service interval. Confirm the VIN, production date, engine, and installed filter dimensions before ordering.
Source: K&N — BMW E36 six-cylinder/M3 replacement air-filter listing · 1999 BMW E36 six-cylinder gasoline application — 33-2070 · checked
Verified ordering references
- Validated equivalentK&N 33-2070
Qty. 1 · Panel engine air filter · catalog-listed
Verify the current manufacturer application listing, VIN, production date, and installed dimensions before purchase.
Catalog: K&N — BMW E36 six-cylinder/M3 replacement air-filter listing · 1999 BMW E36 six-cylinder gasoline application — 33-2070 · checked
Search this part on Amazon
2.5-liter M52 DOHC inline-six (168 hp / 181 lb-ft) — K&N 33-2070
K&N 33-2070
Manufacturer-catalog replacement-part fitment only; it does not establish a BMW service interval. Confirm the VIN, production date, engine, and installed filter dimensions before ordering.
Source: K&N — BMW E36 six-cylinder/M3 replacement air-filter listing · 1999 BMW E36 six-cylinder gasoline application — 33-2070 · checked
Verified ordering references
- Validated equivalentK&N 33-2070
Qty. 1 · Panel engine air filter · catalog-listed
Verify the current manufacturer application listing, VIN, production date, and installed dimensions before purchase.
Catalog: K&N — BMW E36 six-cylinder/M3 replacement air-filter listing · 1999 BMW E36 six-cylinder gasoline application — 33-2070 · checked
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Brake fluid
Sourced interval available
Source: BMW — 1999 323i sedan (E46) service-indicator schedule, preserved by Operation CHARM · Additional Services / Inspection I — every two years · checked
Engine coolant
Sourced interval available
Source: BMW — 1999 323i sedan (E46) service-indicator schedule, preserved by Operation CHARM · Additional Services / Inspection I — every four years · checked
Spark plugs
Sourced interval available
Source: BMW — 1999 323i sedan (E46) service-indicator schedule, preserved by Operation CHARM · 100,000-mile normal/additional-service row · checked
Oxygen sensor
Sourced interval available
Source: BMW — 1999 323i sedan (E46) service-indicator schedule, preserved by Operation CHARM · 100,000-mile normal/additional-service row · checked
Sources
Other 1999 configurations