Exchange primary catalytic converter
18 31 7 786 34718317786347·short number 7786347Genuine BMW Part
Photos coming soon — see the BMW diagram below
01 View BMW DiagramSee this part on the official exploded view→Genuine BMW part 18 31 7 786 347: Exchange primary catalytic converter. The number stamped on the part is 18317786347; BMW's catalog files it under the short number 7786347. You will find it on our Exhaust shelf, under Other Exhaust system parts. It supersedes the older number 2247656, so a part carrying that number is the same part.
It fits the E46 sedan and touring (318d and 320d, 1998–2002), with the M47 engine.
BMW draws it on the Diesel Catalyst (18_0322) diagram. It weighs about 5.3 kg (12 lb).
We have not had one on the shelf yet. Request it and we will tell you when one comes off a car.
Details
18 31 7 786 3471831778634777863471121597610000Supersession
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- Good — minimal wear, fully functional.
- Fair — normal wear, fully functional.
- Acceptable — visible wear, still functional.
Returns: 30 days if a part arrives damaged or isn't what the listing described. Full policy.
Shipping: Ships within the US. Orders ship within 1–2 business days; small parcels ship free on orders of $75.00 or more. Oversize items ship at a flat $49.99 each — free shipping does not cover them.