Came across this post --- list o' option codes + wanted to add it here . . .
. . . These are the ones I know of by now, but I guess there are more. Please help fill in any blanks you know of:
M 058 : Rubber bumperettes
M 060 : Auxillary gasoline heater
M 062 : Outside mirrors, l & r, shoulder or lap belt, vehicle # in rear
M 102 : Two-stage electrically heated & tinted rear window
M 103 : Koni shock absorbers
M 185 : 3-point seat belt, l & r
M 220 : Limited slip differential
M 258 : Head rests, left and right
M 261 : Outside mirrors, l & r
M 400 : Forged alloy wheels (6 x 15) with tires 185/70 VR 15
M 401 : Koni shocks & Hydropn. Struts
M 402 : Koni shock absorbers front with brake ”S”, Koni shock absorbers rear
M 404 : Stabilizer bars, front and rear
M 405 : Front seat w/ reinforced springs, left
M 406 : Front seat w/ reinforced springs, right
M 407 : Raised front seat, left only
M 408 : Raised front seat, right only
M 409 : Sport seats, Recaro
M 410 : Sport seat, Recaro, drivers side
M 411 : Sport seat, right
M 412 : Oil cooler, front (US)
M 414 : 911S instruments and oil sump
M 415 : Lockable front trunk (for Targa only)
M 416 : Raised steering wheel
M 418 : Retractible front seatbelts, l & r
M 419 : 3-point seat belts, front
M 420 : Roll bar (Coupe only)
M 421 : Front bumper horn delete
M 423 : Outside mirror, left side
M 424 : 85 liter tank with space saver wheel
M 425 : Rear window wiper system
M 426 : Anodized aluminium fender strips
M 427 : Stainless steel muffler skirt
M 428 : Rear towing hook
M 429 : Under bumper fog light, front, white.
M 430 : Rectangular Halogen fog light, yellow, below bumper
M 431 : Additional long range driving lights, yellow, above bumper
M 432 : Quartz-iodine long range lamps, white. Above bumper. (Through-the-grille driving lights)
M 433 : Halogen fog lights, white, above bumper
M 434 : Halogen fog lights, yellow, above bumper
M 436 : Two-stage electrically heated & tinted rear window
M 437 : Soft rear window
M 437 : Larger interior mirror (1973)
M 438 : Porsche side lettering, white
M 439 : Porsche side lettering, black
M 440 : Retractable antenna left, loudspeaker and noise suppression
M 441 : Power antenna right, loudspeaker and noise suppression
M 444 : Steel Wheels (6 x 15)
M 449 : Phillips radio with cassette player, left antenna, loudspeaker, noise supression
M 450 : Blaupunkt Boston US band
M 451 : Blaupunkt Hamburg
M 452 : Blaupunkt Frankfurt
M 453 : Blaupunkt Frankfurt radio (US band)
M 454 : Blaupunkt Köln
M 455 : Blaupunkt New York US band
M 456 : Becker Monte Carlo
M 457 : Becker Europa
M 458 : Becker Europa US band
M 459 : Becker Grand Prix
M 460 : Becker Grand Prix US band
(M 449-460 come with retractable antenna left, loudspeaker, noise suppression)
M 461 : Extended steering wheel
M 461 : Blaupunkt Frankfurt
M 462 : Blaupunkt Frankfurt US band
M 462 : Carrera side lettering black (1973)
M 463 : Blaupunkt Köln
M 464 : Blaupunkt New York US band
M 464 : 62L Steel fuel tank (1973)
M 465 : Becker Europa
M 466 : Becker Europa US band
M 467 : Becker Grand Prix
M 468 : Becker Grand Prix US band
(M 461-468 come with power antenna right, loudspeaker, noise suppression)
M 470 : Comfort group for T-model:
- Velouren carpeting
- Gold ”Porsche” nameplate and model number
- Aluminium door sills
- 911S rubber mouldings on bumpers and below doors
- Chrome rocker panels
- 911S instruments
- Rubber bumperettes
- Leather covered steering wheel
M 471 : Two-stage electrically heated & clear rear window
M 473 : S front spoiler
M 477 : Pressure cast alloy wheels (911T)
M 479 : Heavy padded sun-visor (AU only)
M 482 : Engine compartment light
M 483 : Right hand drive
M 485 : Pressure cast alloy wheels (5½ x 15) (911T)
M 490 : Retractable antenna, left side, noise suppression
M 499 : Glove box door with no model designation
M 549 : 3-point seat belts, front
M 559 : Air conditioning
M 565 : Leather steering wheel
M 566 : Fog lights
M 567 : Tinted windshield.
M 568 : Tinted glass all around
M 571 : Rear fog light
M 650 : Electric sliding roof
M 651 : Electric window lifts
M 975 : Forged alloy wheels (5½ x 14) with tires 185 HR 14
M 976 : Chromed steel wheels (5½ x 15) with tires 165 VR 15
M 978 : Stone guards, front and rear
Accessories (without option codes?):
Bumper bars, front and rear
Coco floor mats
Lockable front trunk release
Aluminium door sills
Chrome rocker panels
Full velouren carpeting
Gold lettering ”Porsche” nameplate and model designation
Hub caps with colored Porsche crest
911S rubber moldings, front, rear and sides
Porsche lettering and stribes
All purpose cleaner
Combination car cleaner and wax
Heavy duty brake fluid
Luggage spider
Paste wax
Rear seat luggage straps
Roof luggage rack
Roof ski rack
Silicone spray
Tire gauge
Touch-up paint
Windshield washer
Anti-freeze & solvent . . .