OPGI.com works best with JavaScript enabled.

As seen on

  • Bitchin' Rides Logo
  • Mecum Auctions Logo

Housing, Speedometer Gear, TH400, 40-43 Tooth, In Transmission

Part# : G241649
Sold As: Each
Ship Size: Standard
Price Match: Eligible
$59.99
List Price: $66.95
You Save 10%
Calendar IconArriving Soon
Estimated the week of 11/5/2026
Vehicle Specific View fitment for 19 models
Add To Wishlist 

TH400 Speedometer Gear Housing (40-43-Tooth Gear)

Cast aluminum housing is machined to support the gear and accept the original speedometer cable.

This reproduction speedometer gear housing is for a TH400 transmission using a 40-43-tooth speedometer gear. The cast aluminum housing is machined to locate the gear and accept the original mechanical speedometer cable. The necessary seals are included for installation. Select the housing by both transmission type and gear tooth count; housings intended for other tooth ranges are not interchangeable solely because the cable connection looks similar.

• TH400 automatic-transmission application • For a 40-43-tooth speedometer gear • Cast and machined aluminum housing • Accepts the original speedometer cable • Necessary installation seals included

We aim to provide accurate and complete product information. If you notice anything incorrect, missing, or unclear, please let us know.
WARNING: This product can expose you to chemicals including lead, sulfur, nickel, chromium, vanadium, titanium, polyvinyl chloride, and 4,4’-methylenebis (2-chloroaniline), which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Vehicle Fitment

Year Make Model Application Details
1982 Buick Grand National 40T-43T TH400
1984–1987 Buick Grand National 40T-43T TH400
1976–1987 Buick Regal 1978–1987: 40T-43T TH400
1967–1976 Buick Riviera 40T-43T TH400
1967–1972 Buick Skylark 40T-43T TH400
1983–1986 Buick T-Type 40T-43T TH400
1967–1976 Cadillac DeVille 40-tooth/43-tooth, TH400
1967–1978 Cadillac Eldorado  
1967–1976 Cadillac Fleetwood 40-tooth/43-tooth, TH400
1967–1977 Chevrolet Chevelle 40T-43T TH400
1967–1987 Chevrolet El Camino 1967–1977: 40T-43T TH400
1978–1987: 40T-43T TH400
1978–1983 Chevrolet Malibu 40T-43T TH400
1970–1988 Chevrolet Monte Carlo 1970–1977: (40-Tooth to 43-Tooth) TH400
1970–1977: 40T-43T TH400
1978–1988: 40T-43T TH400
1967–1988 Oldsmobile Cutlass 1967–1977: 40T-43T TH400
1978–1988: 40T-43T TH400
1967–1977 Pontiac Bonneville 40T-43T TH400
1982–1986 Pontiac Bonneville 40T-43T TH400
1967–1977 Pontiac Catalina 40T-43T TH400
1967–1987 Pontiac Grand Prix 1967–1977: 40T-43T TH400
1978–1987: 40T-43T TH400
1967–1973 Pontiac GTO 40T-43T TH400
1967–1973 Pontiac LeMans 40T-43T TH400
1967–1970 Pontiac Tempest 40T-43T TH400
  • Headshot of OPGI Employee
    Need help finding the right GM restoration parts? Contact a GM Parts Specialist
    Mon–Fri 8:00–4:30 PT
    Sat 10:00–3:00 PT
    GM Parts Specialist Offline
  • Price Match Guarantee Great parts. Competitive prices. Guaranteed.
  • GM Restoration Experts Since 1982 Over four decades dedicated to GM restoration
  • Original GM Is Our Standard Original GM parts and factory references guide every reproduction
  • A Deeper GM Selection Thousands of restoration, performance, and replacement parts

Customers Who Viewed This Item Also Viewed

Reviews (3)

UH OH! Product reviews didn't load.
Please reload the page, or unblock our review partner Yotpo.com.
Housing, Speedometer Gear, TH400, 40-43 Tooth, In Transmission
Housing, Speedometer Gear, TH400, 40-43 Tooth, In Transmission