ReferenceN54 N55 S55 B58

BMW special tools catalog: every factory tool number this wiki uses

Every special-tool number the wiki uses, one page: what each 11-x-x tool is, the job it serves, the factory set numbers, and where the DIY alternative honestly exists — labeled.

8 min readUpdated 2026-10-21Rapid Racing

Every factory tool number this wiki's guides reference, one page: what it is, which job it appears in, what the factory data itself says about it, and — where one honestly exists — the DIY alternative, labeled as community practice because the factory never blessed it. The tool numbers follow the factory's own group logic: 11 … is the engine group, 00 … the generic group, and the parts-catalog set numbers (83 30 …) are how complete tool sets are ordered.

The timing-and-crankhub set (N54 family)

Tool	What it is	The job	DIY honesty
`11 0 300`	Crankshaft TDC locking pin — slides into the block, seats in the crank web	Timing check/adjust, chain job, crankhub (n54-crankhub-and-timing-guide)	Pin diameter and seat geometry matter; measure before trusting a print. The decoy-bore test is free and definitive
`11 4 280`	Counterhold for the flywheel/engine locking	Chain job — holds the crank at the central bolt break	A manual-gearbox car in gear with a brake is the community's hold; the factory's is better on an automatic
`11 4 281`	Camshaft locking fixture — bridges the camshafts	Timing check/adjust	The cam flats must be where the fixture expects; a straightedge and the factory cam-position description is the low-budget check
`11 4 283`	Camshaft fixture base — bolts to the head	Timing check/adjust	Same as above — this one indexes off the head casting, hardest to fake
`11 9 260`	Block crankshaft (engine or gearbox removed)	Chain job variants	With the engine out, the flywheel bolts themselves can lock rotation — mind the bolt law
`11 8 660`	Block crankshaft on the gearbox (automatic)	Chain job, automatic cars	—
`11 8 180`	Flywheel holding fixture (manual gearbox)	Chain job, manual cars	—
`00 9 140`	Central-bolt holder — magnets to the engine support, carries the new bolt	Crankhub install	Two clean sockets and patience do carry a bolt; this tool exists because dropped bolts at Step 1 of a two-hour job are real
`00 9 120`	Socket for the camshaft adjuster central bolts	Adjuster R&R	The bolt is a standard external form; the socket's length is the trick. Measure yours
`11 9 340` + `00 9 250`	Chain pre-tension tool + low-range torque wrench	The timing set — 0.6 Nm pre-tension	The tool data itself carries the spec: `00 9 250` measures 0.40–3.00 Nm at ±3%; its successor set `00 9 460` (`00 9 461` + `00 9 462`) replaced it from week 41/2009. A 0.6 Nm reading is beneath most click wrenches — this is the one tool on the page with no honest substitute
`11 8 520`	Increment-wheel alignment fixture	Adjuster R&R (sensor-wheel indexing)	—
`11 4 120`	Chain disconnect tool (chain job up to March 2012)	Pressing the chain apart with tensioner relieved	Pre-2012 procedure only; later cars get the full-module route
`11 8 640`	Releases the aluminum screw on the chain drive module	Chain module R&R	An external-Tx key of the right reach substitutes if the screw is undamaged
`11 8 650` + `11 0 290`	Sprocket-hold bracket + camshaft sprocket lock	Oil pump / sprocket work	The pair is geometry-specific; bent sprockets from chain-lock pliers are a self-inflicted wound
`11 9 900`	Timing pre-tension device (B58/S58 family)	The modular engines' timing set	Same law as `11 9 340`: the pre-tension number is small and the tool resolves it

Factory service documentN54 timing chain replacement — the special-tools list in contextOpens in your account's service knowledge — sign-in required.

The front-seal set (N54)

Tool	What it is	The job	DIY honesty
`11 9 221` + `11 9 222` + `11 9 224`	Seal slackener — bolts to the hub, presses the old seal inward ~1 mm at approx. 20 Nm	Breaking the old seal's grip before pulling	A careful drift can slacken a seal; a scratched crank nose cannot be un-scratched. The tool is cheap insurance
`11 0 371` + `11 0 372`	Seal puller + spindle — puller screws into the seal at 80 Nm, spindle draws it	Seal removal	Sheet-metal screws and a slide hammer are the community's puller; they work, and they destroy the seal by design either way
`11 4 370`	Press-out piston for the puller	Stubborn seals	—
`11 9 232` + `11 9 234`	Installer fixture, bolted to the hub	Driving the new seal square	A suitably-sized driver and even pressure installs seals daily in every shop that isn't ours to audit
`11 9 231` + `11 9 233`	Draws the new seal in flush	Final seat	—
`11 8 800`	Front radial shaft seal installer (B58 family)	B58 front seal	Set number 83 30 0 496 127 per the tool data

Factory service documentN54 front crankshaft seal — the seal tool sequence in contextOpens in your account's service knowledge — sign-in required.

The seal job's Loctite law (primer 171000, compound 128357, grooves filled flush) travels with these tools, not with the DIY substitutes — the seal kit's instructions and the seal guide own it.

The head-and-block bench set

Tool	What it is	The job	DIY honesty
`11 4 341` / `11 4 342` / `11 4 344` / `11 4 345`	Head watertightness plates, flanges and bolts (bolts to 25 Nm)	Pressure-testing a head off the car — 3 bar max, 60 °C	The community plates are cut from flat stock; the gasket-sealing law (not the plate) is what makes the test honest
`11 4 470`	Sealing-surface tool — the ONLY tool the factory permits on head/block faces	Surface prep before gasket work	The factory's words leave no room: no metal-cutting tools, no abrasive pads on drills. The tool is a finishing fixture, not a cleaner
`11 4 480` / `11 4 481` / `11 4 284` / `11 4 285`	Adjuster-job fixtures and setting boards	Adjuster R&R, component set-down	The oddments boards are convenience; the fixtures are geometry
`11 8 510`	Piston-cooling (oil spray) nozzle setting fixture	Main-bearing work — sets nozzle geometry after removal	A bent nozzle sprays the bore instead of the crown; the fixture is how the factory prevents it. Measure twice, bend once, or don't pretend
`11 8 620`	Deep socket for the recessed head-cover fasteners (N54)	Valve cover R&R	The right-length socket is the tool; any maker's will do
`11 9 240`	Oil filter cap wrench	Every oil change	The cap is 25 Nm and every cap wrench shape on earth fits it

Factory service documentHead watertightness — plates, 3 bar ceiling, 60 °C, in contextOpens in your account's service knowledge — sign-in required.

The fluids-and-bleed set

Tool	What it is	The job	DIY honesty
Vacuum filling unit (`17 00 039` procedure)	Pulls the cooling system under vacuum, fills without trapping air	Coolant refill after component work — the factory's preferred refill path	The procedure's own words: when refilling after component work the system must be filled with the vacuum unit; the 12-minute bleed then becomes the confirmation pass
`81 29 2 208 …` kit	Walnut-blast extraction adapter, probe, peiner (parts-catalog family, not a special tool)	Intake-port carbon cleaning	The community's DIY blast rigs ARE this category — the factory procedure defines media, pressure, and time; the wand is hardware

Factory service documentCooling system vacuum fill — the unit the procedure requiresOpens in your account's service knowledge — sign-in required.

The walnut parameters the procedure carries, for any rig: walnut-shell granulate media, and on the B58-family document, roughly 20 seconds of blasting plus 10 seconds of blow-out per port at 6–8 bar — the N54 original documents the same craft with its own numbers in the walnut guide.

Sourcing honesty — what the tool data itself says

The factory's own tool records carry sourcing notes worth quoting straight, because they surprise people:

11 9 340 — "Available only as a complete special tool set 11 9 340 = 83 30 0 493 971" (as of Nov 2011). The pre-tension tool is bought as a set.
11 8 520 — complete set 83 30 0 495 727 (June 2012 onward).
11 9 900 — complete set 83 30 0 496 360.
11 8 800 — complete set 83 30 0 496 127.
11 4 342 / 11 4 344 — "Delivery until stocks last" as of 02/2019: the watertightness plates are end-of-life at the factory, and the secondhand/replica market is now the real supply.
00 9 250 — superseded by set 00 9 460 (00 9 461 wrench + 00 9 462 extension) since week 41/2009; the spec both carry is the 0.40–3.00 Nm range at ±3%.

Per the factory data we hold: official pricing and current availability are catalog questions, not service-data questions — the set numbers above are the citable layer, and today's price is your dealer's answer.

The don't-substitute list — ours, labeled

Community practice, not factory law — but earned across every guide on this wiki: the four tools where the substitute costs more than it saves are the TDC pin geometry (wrong pin, wrong TDC, bent everything), the pre-tension wrench (a tool that cannot resolve 0.6 Nm cannot apply it), the nozzle fixture (a bent spray nozzle is a slow death), and the sealing-surface tool (the surface IS the gasket's partner). Everything else on this page has an honest DIY path with the right care; those four are where care is not the variable. The torque-specs-master-index carries the numbers these tools apply; the spec sheets carry each engine's full data tables.

Factory sources

Questions

Do I really need the factory special tools for an N54 timing job?

The four that matter most: the TDC lock (11 0 300), the camshaft fixtures (11 4 281/283), the pre-tension set (11 9 340 with the 00 9 250/460 torque wrench), and the adjuster socket (00 9 120). Substitutes exist for some steps, but the timing set's 0.6 Nm pre-tension needs a wrench that can resolve it.

What is BMW special tool 11 0 300?

The crankshaft TDC locking pin for the N54 — it slides into the block and seats in the crank web at firing TDC of cylinder 1. On automatics, the large decoy bore sits just before the real one; the test for the correct bore is that the engine cannot be moved at the central bolt with the pin seated.

Where do I buy BMW special tools?

The factory route is the parts catalog's 83 30 … set numbers, several of which the tool data still carries — for example 11 9 340 as set 83 30 0 493 971. The aftermarket mirrors most of them at hobbyist prices; the honest split between safe substitutes and don't-substitute steps is below, per tool.

Can I walnut blast without the factory kit?

Yes, and the community has done so for a decade — the factory procedure's parameters (media, pressure, time) are the spec, not the wand. The extraction-adapter kit the walnut guide uses is itself the 81 29 2 208 … parts-catalog family, not a factory special tool.