Forget the engine: what really decides which bumper fits your E46

Bumper listings for the E46 are full of engine codes: "330i front bumper", "320d rear". BMW's parts catalogue does not think that way. It picks a bumper cover by three things, body style, production date and package (standard, M Aerodynamics, M3), and the engine is not one of them. Once you know that, most of the confusion in used-parts listings disappears, and the few real traps stand out: the production-date split, the hidden impact carrier, and the handful of cases where equipment really does change the cover.

The short version

• Engine almost never matters for a standard cover: the catalogue lists the same front and rear covers for the 320i, the 330i and the 320d Sedan. ¹ The one exception found is the Compact's standard rear, where the 325ti has its own cover. ⁷
• Body and date do. Sedan and Touring covers split at September 2001; Coupé and Convertible covers split at March 2003; Coupé and Convertible share identical covers; the M3 front splits at September 2001 too. ^1,7
• Package is the third axis. The M Aerodynamics covers come in two catalogue families (option codes 715 and 716); the Coupé and Convertible have one M front cover; the M3 has its own. ¹
• M package covers are catalogued for ordinary cars. Fitting them to a non-M Sedan, Touring or Compact is a normal, listed path; owners add that the brackets must match the era. ^1,5
• Equipment changes the cover more often than the first catalogue read suggested. On the second mirror, parking sensors split most non-Sedan rear covers (Touring M, Coupé/Convertible facelift and M, Compact M, M3), headlight washers split the Compact fronts, and a tow hitch splits the Touring standard rear. These are versions inside the same body, era and package, not new families. ⁷
• Behind every cover sits an impact carrier in two versions, one of them marked for the US 5 mph standard. ¹

Body and date: the two things to get right

The catalogue's front-cover groups for the Sedan and Touring are named by date: "front bumper trim panel up to 9-01" and "front bumper trim panel from 09-01". The same primed cover number appears in the Sedan 320i, 330i and 320d trees and in the Touring tree, era for era. ¹ The rear Sedan cover splits at the same date. ¹

For the Coupé and Convertible the facelift group is "from 03-03" and the earlier cover is dated "to Mar '03" on the second mirror. ^1,7 Coupé and Convertible carry identical cover numbers throughout. ¹

The Compact has its own front covers and its own rear; no production-date split is visible in its groups. Its two standard front covers differ by equipment, not date: one is for cars with the headlight cleaning system. ^1,7 The Compact rear is also the one place where the model matters: the 325ti uses a different standard rear cover from the 316ti, 318ti and the diesels. ⁷

What the dates mean for a buyer: a 2001 Sedan or a 2003 Coupé can be on either side of its split, and the sides are different parts. The production month, not the model year, decides.

Package: standard, M package, M3

The catalogue keeps the M look in its own groups: "M trim panel bumper front" and "rear", each in two versions under option codes 715 and 716, and the vehicle index names the option an Aerodynamics Package; the "M" is in the group names. ¹ Code 715 appears in the Sedan trees (including the 320d), code 716 in the Sedan, Touring and 320d trees; the Compact has its own code-716 front and rear with different numbers. ¹ Which of the two is the one owners call "M-Tech I" and which "M-Tech II" is not something the catalogue says. ⁶

The Coupé and Convertible M front cover sits in a single group, "M front bumper trim panel", with no package code, and the M rear comes as two unlabelled alternatives. ¹

The M3 has its own front cover in two versions, and the second mirror explains why: one is "to Sep '01", the other "from Sep '01", so the M3 front follows a September 2001 split of its own, not the Coupé's March 2003 one. ⁷ Its rear exists with and without park distance control and has no date split. ^1,7 Owners add that an M3 cover does not bolt onto a non-M Coupé because the M3's wings are wider, so "M3 look" covers for ordinary Coupés are aftermarket replicas. ⁵

Every cover exists as a primed and a painted part number. That is a paint decision, not a fit decision. ¹

Equipment: what changes the cover, and what only looks like it does

Parking sensors. The first mirror shows park distance control (PDC) for standard cars as retrofit kits. ² The second mirror adds what those kit pages hide: on most rear covers outside the Sedan, the catalogue lists a version "for vehicles with PDC" and one without. That is the case for the Touring M rear, the Coupé/Convertible facelift rear, the Coupé/Convertible M rear, the Compact M rear and the M3 rear. The Sedan rears showed no such split in the groups read. ⁷ Owners add that sensor positions differ between pre- and post-facelift covers. ⁵ Practical reading: look at the back of your car; if it has sensors, you need the sensor version of the cover.

Headlight washers and fog lights. The washer nozzle covers and the fog-lamp supports and covers are separate parts, and BMW sells a retrofit kit for the headlight cleaning system. ^1,2 On the Compact, both the standard and the M front cover exist in a version for cars with the cleaning system. ⁷

Tow hitch. The Touring standard rear exists in a version "for vehicles with trailer coupling". ⁷ On the other bodies the catalogue shows a removable tow-eye flap in the cover; the Compact's primed tow-hitch cover is on one mirror only (see the notes). ¹

The pairs that were unexplained. The eight unexplained pairs from the first catalogue read all turn out to be date, sensor, washer or hitch versions; none changes which body, era or package a cover belongs to. ⁷

The hidden part: the impact carrier

Behind the cover sits the carrier, the structural part that absorbs the knock. The catalogue lists two front carriers side by side on every body style: one tagged "4 km/h" and one tagged "8 km/h = 5 mph". The rear carrier is the 4 km/h version on Sedan, Coupé and M3; the Touring and the Compact have their own. ¹

Five miles per hour is the US bumper-impact standard, so the 8 km/h carrier is probably the US-market part. That is an inference; the mirror is a European one and does not say which market gets which. ⁶ What it means for a buyer: the cover you see is the same number for both markets in this mirror, but what is behind it may not be. If you buy a complete front end from an imported car, the carrier is the part to check, and it is a safety part.

Before you buy a cover

1. Match body style and production-date group, not engine. Ignore "330i" in a listing; ask for the body and the era. On a Sedan or Touring, BMW's own description of the facelift front helps: "new curved headlights, incorporating the indicators behind clear glass, and round fog lamps". ^1,3
2. Expect bracket work across the date split. Owners report that a facelift cover on an earlier car, or an M cover on a car from the other era, needs the matching brackets and guides. ⁵
3. Check sensors, washers and hitch on your own car. On most rear covers outside the Sedan, parking sensors decide which version you need; on the Compact front, the headlight washers do; on the Touring standard rear, the tow hitch does. Fog lights stay add-on parts. ^7,1,2
4. Ask which M package. Two families, two codes, not interchangeable by number, and not reliably told apart by eye. ^1,6
5. Check the carrier on an import. It is hidden behind the cover, and the 5 mph carrier is a different part from the 4 km/h one. ¹
6. Do not plan an M3 cover for a non-M Coupé. Owners say it needs adapters because of the wider wings; the catalogue offers no such path. ^5,1

Notes on the evidence

Conflicts and corrections recorded. (1) Owners say European and US covers are "the same except reflectors and washer holes"; the catalogue shows market-specific carriers and PDC kits. Not necessarily contradictory (cover versus hardware), but unresolved. (2) The first catalogue read left eight cover pairs unexplained and concluded that PDC changes only the M3 rear cover; the second mirror resolves all eight (one date split, the M3 front at September 2001; four parking-sensor rears; two headlight-washer Compact fronts; one tow-hitch Touring rear) and shows PDC versions on most non-Sedan rears. This article follows the second mirror. (3) The first read's "engine never matters" holds for the Sedan and Touring covers read, but not for the Compact standard rear (325ti). (4) The Compact's primed tow-hitch cover appears on one mirror only.

Not established (open). The marketing names and years of option codes 715 and 716, and how the printed options "M Sports package II" and "Aerodynamics package" relate to them; which market receives which carrier; whether the Sedan rears have PDC versions on other engine variants (not exhaustively read); a Compact production-date split, if any. Both mirrors derive from the same BMW data, so "two mirrors agree" means consistent parsing, not independent confirmation; confidence stays MEDIUM except where a date column is printed.

What comes next

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