OEM № 55905-12060 · ’82–’85 Toyota Celica Supra

Heater Control Knob

A working record, not a sales gloss. The geometry, material, and real-car evidence each earn their own line.

CURRENT EVIDENCE STATUS

The label below is literal. It is not a fit, strength, or availability claim beyond the record.

In development

Hand-turned knob on the heater/climate control lever on the dash. Toyota's own OEM catalog designation for the original documented part is "KNOB, HEATER CONTROL LEVER" (55905-12060, mfr note "W(BOOST VENTILATOR)"), confirmed via toyotapartsdeal.com's dedicated OEM part page -- its own fitment table explicitly lists chassis codes MA61L-BLMQFA/K and MA61L-BLPQFA/K (1982-1985 Celica GT/GTS/ST/Supra, A60 generation). That part is marked "Replaced By: 55905-12070" ("Control Knob Sub-Assembly"), whose own dedicated page's fitment table likewise explicitly lists the same MA61L codes under "1982-1989 Toyota Celica: GT, GTS, ST, Supra, Turbo 4WD, Turbo All Trac". epc-data.com (primary reference drawing source) returned HTTP 429 this session before its MA61 heater-control diagram group could be located.

The paper trail: superseded to 55905-12070

MEASUREMENT BAY

Dimensions on record.

Published free. CAD stays in the workshop. Every estimate remains visibly an estimate.

Critical dimensions — confirmed 0 of 6 (published free; the CAD stays in the workshop)
Dimension	mm	Confidence
overall_diameter	20	ESTIMATED
overall_height	15	ESTIMATED
top_dome_fillet_radius	6	ESTIMATED
shaft_bore_diameter	4	ESTIMATED
shaft_bore_depth	8	ESTIMATED
base_chamfer	0.6	ESTIMATED

NEXT ACTION

Reserve one In development — reserving bumps it up the queue and locks your place

OCP3D field file · Case № 55905-12060