Collar nut
18 10 7 523 80518107523805·short number 7523805Genuine BMW Part
Photos coming soon — see the BMW diagram below
08 View BMW DiagramSee this part on the official exploded view→What's Included
Sold as part of these kits
Genuine BMW part 18 10 7 523 805: Collar nut. The number stamped on the part is 18107523805; BMW's catalog files it under the short number 7523805. You will find it on our Exhaust shelf, under Catalytic converter/front silencer. It supersedes the older numbers 0394328 and 1737171, so a part carrying any of them is the same part.
BMW's catalog records no E36 or E46 it is fitted to; it belongs to other BMW models.
BMW draws it on 44 diagrams, among them Exhaust manifold (11_1081) and Exhaust manifold (11_1418). It weighs about 10 g (under 0.1 lb). It also comes in BMW kit Rmfd exhaust manifold with catalyst (0150356).
We have not had one on the shelf yet. Request it and we will tell you when one comes off a car.
Details
18 10 7 523 805181075238057523805No fitment data available for this part.
Exhaust manifold
Diagram 11_1081
Exhaust manifold
Diagram 11_1418
Exhaust manifold
Diagram 11_1483
Exhaust manifold with catalyst
Diagram 11_2283
Exhaust manifold
Diagram 11_2672
Exhaust manifold
Diagram 11_2678
Exhaust manifold
Diagram 11_2825
Exhaust manifold
Diagram 11_4612
Exhaust manifold
Diagram 11_4926
Exhaust manifold
Diagram 11_5270
EXHAUST PIPE FRONT SILENCER
Diagram 18_0209
Catalytic converter/front silencer
Diagram 18_0220
Catalytic converter/front silencer
Diagram 18_0221
Exhaust system with catalytic converter
Diagram 18_0222
Catalytic converter/front silencer
Diagram 18_0254
Catalytic converter/front silencer
Diagram 18_0255
Catalytic converter/front silencer
Diagram 18_0256
Catalytic converter/front silencer
Diagram 18_0300
Catalytic converter/front silencer
Diagram 18_0367
Exhaust pipe, catalytic converter
Diagram 18_0371
Catalytic converter/front silencer
Diagram 18_0374
CATALYST/LAMBDA PROBE
Diagram 18_0390
Catalytic converter/front silencer
Diagram 18_0408
FRONT SILENCER
Diagram 18_0483
This part is on 21 more diagrams; the E36 and E46 ones are listed first.
Related Parts
Every used part is inspected and graded before listing. Condition grades:
- 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.