GM TH400 Chrome Steel 24" Transmission Dipstick
GM TH400 Chrome Steel 24" Transmission Dipstick
SKU: SKU: SP7401
Low stock

Product Details
Features
- Chrome steel dipstick fits GM Turbo-Hydramatic 400 transmissions
- Firewall-mount design routes to transmission case for factory fit
- Fits Camaro, Chevelle, Nova, Corvette, and GM RWD platforms
- Chrome steel handle and tube, 24 in. length, non-locking
Description
GM's Turbo-Hydramatic 400 (TH400/THM400) transmission uses a firewall-mount dipstick configuration in most applications, and this chrome steel dipstick is built for that standard setup.
It's commonly used in TH400-equipped Camaro, Chevelle, Nova, and Corvette; GM C/K-series trucks, Suburban, and Blazer; Pontiac Firebird and GTO; and other GM RWD platforms using the TH400 from 1964 through the 1990s.
If headers, crossmembers, or other engine bay components interfere with firewall-mounted routing, TSP also offers a bellhousing-mount version (TSP #SP8201) as an alternative.
The dipstick measures 24 inches and uses a steel tube. It is a fixed, non-locking design. Confirm your transmission case's dipstick tube boss location matches this 24 inch length before ordering, since TH400 dipstick length can vary by chassis and firewall routing.
Constructed with a chrome steel handle and tube, the dipstick adds a polished, show-quality appearance to the engine bay.
Applications
Fits GM Turbo-Hydramatic 400 (TH400/THM400). Common in Camaro, Chevelle, Nova, and Corvette; GM C/K-series trucks, Suburban, and Blazer; Pontiac Firebird and GTO; and other GM RWD platforms using the TH400, 1964 through the 1990s.
Installation
Firewall-mount design, entering at the transmission case. If headers, crossmembers, or other engine bay components interfere with firewall routing, TSP's bellhousing-mount version (SP8201) is the alternative. Confirm your transmission case's dipstick tube boss location and length requirement (24 in.) match before ordering, since TH400 dipstick length can vary by chassis and firewall routing. Fixed length, non-locking.
Specs
| Handle Material | Steel |
| Handle Finish | Chrome |
| Tube Included | Yes |
| Tube Material | Steel |
| Tube Finish | Chrome |
| Dipstick Length | 24" |
| Dipstick Entry | Transmission Case |
| Mounting Location | Firewall |
| Locking | No |
Engine Fitment
COMPATIBLE WITH
• GM Turbo-Hydramatic 400 ("TH400" or "THM400")
NOTES
• Firewall-mount configuration — if headers, crossmembers, or other engine bay components interfere with firewall routing, TSP's bellhousing-mount TH400 dipstick (SP8201) offers an alternative routing path.
• Confirm your transmission case's dipstick tube boss location and length requirement (24") match this dipstick before ordering, as TH400 dipstick length can vary by chassis/firewall routing.
COMMON VEHICLE APPLICATIONS
Camaro/Chevelle/Nova/Corvette (TH400-equipped), C/K-series trucks/Suburban/Blazer, Pontiac Firebird/GTO, and other GM RWD platforms using the TH400 (1964-1990s).
Q&A
What transmission does this dipstick fit?
GM Turbo-Hydramatic 400 (TH400/THM400).
Is this the firewall-mount or bellhousing-mount version?
Firewall-mount. If headers, crossmembers, or other components interfere with firewall routing, TSP's bellhousing-mount version (SP8201) is the alternative.
How long is the dipstick?
24 inches — confirm your transmission case's dipstick tube boss location and length requirement match before ordering, since TH400 dipstick length can vary by chassis and firewall routing.
What vehicles commonly use this transmission?
Camaro, Chevelle, Nova, and Corvette; GM C/K-series trucks, Suburban, and Blazer; Pontiac Firebird and GTO; and other GM RWD platforms using the TH400, 1964 through the 1990s.
Is this dipstick locking or adjustable?
No, it's a fixed, non-locking design.
What material and finish does this dipstick have?
Steel handle and tube, chrome finish.
Emissions Notice
This product does not affect vehicle emissions and is not subject to emissions compliance regulations.
GM TH400 Chrome Steel 24" Transmission Dipstick
GM's Turbo-Hydramatic 400 (TH400/THM400) transmission uses a firewall-mount dipstick configuration in most applications, and this chrome steel dipstick is built for that standard setup.
It's commonly used in TH400-equipped Camaro, Chevelle, Nova, and Corvette; GM C/K-series trucks, Suburban, and Blazer; Pontiac Firebird and GTO; and other GM RWD platforms using the TH400 from 1964 through the 1990s.
If headers, crossmembers, or other engine bay components interfere with firewall-mounted routing, TSP also offers a bellhousing-mount version (TSP #SP8201) as an alternative.
The dipstick measures 24 inches and uses a steel tube. It is a fixed, non-locking design. Confirm your transmission case's dipstick tube boss location matches this 24 inch length before ordering, since TH400 dipstick length can vary by chassis and firewall routing.
Constructed with a chrome steel handle and tube, the dipstick adds a polished, show-quality appearance to the engine bay.
Applications
Fits GM Turbo-Hydramatic 400 (TH400/THM400). Common in Camaro, Chevelle, Nova, and Corvette; GM C/K-series trucks, Suburban, and Blazer; Pontiac Firebird and GTO; and other GM RWD platforms using the TH400, 1964 through the 1990s.
Installation
Firewall-mount design, entering at the transmission case. If headers, crossmembers, or other engine bay components interfere with firewall routing, TSP's bellhousing-mount version (SP8201) is the alternative. Confirm your transmission case's dipstick tube boss location and length requirement (24 in.) match before ordering, since TH400 dipstick length can vary by chassis and firewall routing. Fixed length, non-locking.
COMPATIBLE WITH
• GM Turbo-Hydramatic 400 ("TH400" or "THM400")
NOTES
• Firewall-mount configuration — if headers, crossmembers, or other engine bay components interfere with firewall routing, TSP's bellhousing-mount TH400 dipstick (SP8201) offers an alternative routing path.
• Confirm your transmission case's dipstick tube boss location and length requirement (24") match this dipstick before ordering, as TH400 dipstick length can vary by chassis/firewall routing.
COMMON VEHICLE APPLICATIONS
Camaro/Chevelle/Nova/Corvette (TH400-equipped), C/K-series trucks/Suburban/Blazer, Pontiac Firebird/GTO, and other GM RWD platforms using the TH400 (1964-1990s).
SPECIFICATIONS
Handle Material: Steel
Handle Finish: Chrome
Tube Included: Yes
Tube Material: Steel
Tube Finish: Chrome
Dipstick Length: 24"
Dipstick Entry: Transmission Case
Mounting Location: Firewall
Locking: No