Dorman 977-809 fuel injection throttle body for the 1999-2000 Chevrolet C6500 Kodiak V8 7.4L and other vehicles regulates the air that enters the engine. It is an electronic throttle body for gas engines, so the engine computer sets how far it opens.
- Dorman OE FIX line: addresses original throttle bodies that often fail when moisture and oil foul the internal electronics
- Dorman Sensor Shield technology uses a proprietary butterfly shaft seal to keep moisture and oil out of the internals
- Upgraded internal components intended to prevent future failures
- Newly built aluminum case
- Throttle position sensor included
Quick facts
- Part: Dorman 977-809 fuel injection throttle body
- Fits: 1999-2000 Chevrolet C6500 Kodiak V8 7.4L and other vehicles
- Material: Aluminum
- Condition: New
A rough or unsteady idle, hesitation when you press the pedal or a warning light can mean the throttle body's electronics are failing. A vacuum leak is another common source of an unsteady idle, so these signs alone do not prove the throttle body is at fault. The engine takes one throttle body.
Fits
It is a direct-fit replacement for the 1999-2000 Chevrolet C7500 Kodiak V8 7.4L and the 1999-2000 GMC C6500 Topkick V8 7.4L, plus a wide range of other Chevrolet and GMC models. If your vehicle is not one of these, look up its year and engine in the "Vehicles it fits" section.
Specifications
Fit and size
- Quantity per vehicle: 1
- Inlet diameter: 90.02 mm
- Outlet diameter: 76.13 mm
- Bore diameter: 76.13 mm
- Inlet type: flanged
- Outlet type: non-flanged
- Electrical connector: male, 8 blade terminals
Build and materials
- Type: electronic
- Throttle body material: aluminum
- Housing material: aluminum/PBT
- Finish: natural
- Throttle position sensor: included
- Condition: new
- Country of origin: China
In the box
One electronic throttle body with its throttle position sensor. The gasket or seal, mounting hardware and installation hardware are not included, so plan on new bolts and a gasket, since the old ones may not be reusable.
Installation notes
- The plug-and-play electrical connector plugs in directly.
- Installation is the same as the original throttle body.
Interchange: 67-3017
APTHB388 · RTB1075 · NTB1075 · 17113565 · 17113671 · TB1078 · S20030
This part cross-references / interchanges with the following part numbers:
APTHB388, RTB1075, NTB1075, 67-3017, 17113565, 17113671, TB1078, S20030
Frequently Asked Questions
Does the Dorman 977-809 throttle body fit the 1999-2000 Chevrolet C7500 Kodiak V8 7.4L?
Yes. Dorman 977-809 fits the 1999-2000 Chevrolet C7500 Kodiak V8 7.4L, and the "Vehicles it fits" section shows the other trucks and engines it covers.
Does this Dorman throttle body come with a gasket or mounting bolts?
No. The box holds one electronic throttle body with its throttle position sensor. The gasket and mounting hardware are not included.
What size are the inlet and outlet on this electronic throttle body?
Dorman 977-809 has a 90.02 mm inlet and a 76.13 mm outlet and bore. The inlet is flanged and the outlet is non-flanged.
What does the Sensor Shield seal do on this throttle body?
It is a proprietary butterfly shaft seal meant to keep moisture and oil out of the internal electronics, which is how original throttle bodies often fail.
Is the electrical connector plug-and-play on the Dorman 977-809?
Yes. The male connector has 8 blade terminals and plugs in directly, and installation is the same as the original throttle body.
