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Master Index

Payment 877-771-3372 More parts 877-771-3372 Contact

  Page number:  GM-635-920
EXTENSION HOUSING
47523 parts in stock comprising 18320 unique part numbers from 55994 numbers listed. (11/21/2025)
Style Color
Code		 OA/Thick OD/Deep ID/Wide Our Part Number Price Picture
Tooth Counts ID Marks
Year Miscellaneous Info  
Years   Part Info Number  
Call 877-771-3372 for current price & availability ( 8am - 8pm Pacific Time )
Big speedo

6" long 		LKK 6"     GM-635-92-008E-LH Price Picture
not
available
  1387463
  Mount = Vertical, 2 slots
Speedo bore = 2-1/16"
Known to fit 15-7/16" output shaft 		 
Big speedo

6" long 		GGY 6-1/4"   6" XL GM-635-92-0092-K8 Price Picture
not
available
  1383475
  Mount = Hanging, 2-3/4" span, 2 vertical bolt bores
2-1/16" speedo hole
Known to fit 15-7/16" output shaft 		 
Big speedo

6" long

American threads 		YGR 6"     GM-635-92-00F8-H3 Price Picture
not
available
  6260036
  No mount
2-1/16" speedo hole
No bottom holes
American speedo bolt threads 		 
Big speedo

6" long

American threads

Modified 		EGY 6"     GM-635-92-016M-71 Price Picture
not
available
  6260036
  No mount
2-1/16" speedo hole
No bottom holes
American speedo bolt threads
Aftermarket horizontal mount added 		 
Big speedo

6" long

Bastard threads 		GOG 6"     GM-635-92-00FN-GK Price Picture
not
available
  8640839
  No mount
2-1/16" speedo hole
No bottom holes
Metric speedo bolt threads
Known to fit 15-7/16" output shaft 		 
Big speedo

12-1/8" long

Mount 		LVY 12-5/8"   12-1/8" XL GM-635-92-0077-JJ Price Picture
not
available
  6260240
  Bottom mount
2-1/16" speedo hole 		 
Big speedo

12-1/8" long

No mount 		OOO 12-5/8"   12-1/8" XL GM-635-92-0081-G5 Price Picture
not
available
  6260009
  No mount
2-1/16" speedo hole 		 
Small speedo

6" long

2 horizontal holes 		YRO 6"     GM-635-92-013U-CG Price Picture
not
available
  -
  No mount
7/8" speedo hole
No damper mount holes
2 horizontal holes
Aftermarket TH200 Camaro conversion
Known to fit 15-7/16" output shaft 		 
Small speedo

6" long

American threads 		KKL 6"     GM-635-92-0093-AA Price
Enlarge
  6.338913
  No mount
7/8" speedo hole
3 bottom damper mount holes
American speedo bolt threads
Known to fit 15-7/16" output shaft 		 
Small speedo

6" long

American threads 		EER 6"   6-1/4" XL GM-635-92-009C-HE Price
Enlarge
  6261108
  No mount
7/8" speedo hole
No damper mount holes
American speedo bolt threads
Known to fit 15-7/16" output shaft 		 
Small speedo

6" long

Bastard threads 		BBY 6"     GM-635-92-009V-8N Price
Enlarge
  864031.
  No mount
7/8" speedo hole
3 bottom damper mount holes
Metric speedo bolt threads
Known to fit 15-7/16" output shaft 		 
Small speedo

6" long

Bastard threads 		OOK 6"   6-1/4" XL GM-635-92-009E-MJ Price
Enlarge
  8640389
  No mount
7/8" speedo hole
No damper mount holes
Metric speedo bolt threads
Known to fit 15-7/16" output shaft
Some castings have mirrored '9' in casting number
[009F] 		 
Small speedo

6" long

Bastard threads 		OOV 6"   6-1/4" XL GM-635-92-009F-PL Price
Enlarge
  8640830
  No mount
7/8" speedo hole
No damper mount holes
Metric speedo bolt threads
Known to fit 15-7/16" output shaft
[009E] 		 
Small speedo

6" long

Bastard threads 		BYO 6"   6-1/4" XL GM-635-92-00QR-H6 Price Picture
not
available
  6261108
  No mount
7/8" speedo hole
No damper mount holes
Metric speedo bolt threads
Known to fit 15-7/16" output shaft 		 
Small speedo

9" long

American threads 		OOB 9"   9-1/4" XL GM-635-92-009A-N8 Price
Enlarge
  6261659
  No mount
7/8" speedo hole
American threads 		 
Small speedo

9" long

Bastard threads 		RGR 9"   9-1/4" XL GM-635-92-00G3-HT Price
Enlarge
  8640392
  No mount
7/8" speedo hole
Metric threads 		 
Small speedo

9" long

Bastard threads 		RRR 9"   9-1/4" XL GM-635-92-0099-FQ Price
Enlarge
  8640832
  No mount
7/8" speedo hole
Metric threads 		 
Small speedo

12-1/8" long

American threads 		LKY 12-1/8"     GM-635-92-00NC-93 Price
Enlarge
  6261634
  No mount
7/8" speedo hole
American threads 		 
  Last updated:  11/21/2025
Master Index


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Payment 877-771-3372 More parts 877-771-3372 Contact


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  Last update:  11/21/2025