Throttle Position Sensor

Throttle Position Sensor: the part that tells your ECU where the pedal is

A throttle position sensor reports throttle blade angle back to the ECU. On a cable throttle it usually rides on the throttle body shaft; on a drive-by-wire setup it lives inside the pedal or throttle assembly. That signal drives fuel, ignition timing, idle behavior and shift points. When a TPS gets worn or scratchy, you feel it: surging at part throttle, a hunting idle, hesitation off the line, or a stored code. Fitting a new one restores a clean, linear voltage sweep from closed to wide-open, which is why people replace them on a tired car and why tuners want a reliable one before dialing in a map.

What ThreePiece stocks

There are 8 throttle position sensors in this category, spanning 4 brands: BLOX Racing (the largest share of the range), BBK, Haltech and TwinPower. Prices currently run from $69 to $224 for what is in stock right now, not a locked-in quote. Coverage leans toward Honda, Ford, Acura and Harley-Davidson applications across a wide year span, so this is a mix of import, domestic V8 and V-twin fitments rather than one platform.

Concrete examples: the BLOX Racing TPS for the 2002-2006 RSX Type-S and Civic Si (EP3) and its updated Version 2; the BBK 86-93 Mustang 5.0 TPS for the Fox-body throttle body; the TwinPower TPS replacing H-D 27659-07 for Touring and Softail; and the Haltech contactless motorsport sensor with an 8mm D-shaft for standalone builds.

How to choose

  • Direct replacement vs. universal. If you want plug-and-play, pick a sensor listed for your car or bike - the BLOX Honda/Acura, BBK Mustang and TwinPower Harley units are application-specific.
  • Contact vs. contactless. The Haltech unit is a contactless motorsport sensor with an 8mm D-shaft and CW/CCW rotation, aimed at standalone or custom throttle setups rather than a stock harness swap.
  • Budget spread. The lower end near $69 covers straightforward OE-style replacements; the higher end near $224 reflects the motorsport contactless piece.

Six of the eight listings carry fitment data, with top vehicles including the Ford Mustang, Honda Accord, Acura RSX, Honda CR-V, Honda Element, Honda Civic, and Harley-Davidson Touring and Softail across roughly 1986 to 2016.

What else you may need

A TPS often gets touched during broader engine work. If you are chasing fuel delivery alongside a rough idle, look at Fuel Pumps. For a full teardown, Head Gaskets and Gasket Kits keep the reseal covered, and Pistons come into play on a rebuild. Plumbing and mounting hardware live under Adapters and Fittings. Browse everything under Engine Components.

Fitment and ordering

Not sure which sensor matches your throttle body or harness? Call 813-535-5801 or use contact us before you order. All orders ship free, and Affirm and Katapult financing is available if you want to spread it out.

Throttle Position Sensor: the part that tells your ECU where the pedal is

A throttle position sensor reports throttle blade angle back to the ECU. On a cable throttle it usually rides on the throttle body shaft; on a drive-by-wire setup it lives inside the pedal or throttle assembly. That signal drives fuel, ignition timing, idle behavior and shift points. When a TPS gets worn or scratchy, you feel it: surging at part throttle, a hunting idle, hesitation off the line, or a stored code. Fitting a new one restores a clean, linear voltage sweep from closed to wide-open, which is why people replace them on a tired car and why tuners want a reliable one before dialing in a map.

What ThreePiece stocks

There are 8 throttle position sensors in this category, spanning 4 brands: BLOX Racing (the largest share of the range), BBK, Haltech and TwinPower. Prices currently run from $69 to $224 for what is in stock right now, not a locked-in quote. Coverage leans toward Honda, Ford, Acura and Harley-Davidson applications across a wide year span, so this is a mix of import, domestic V8 and V-twin fitments rather than one platform.

Concrete examples: the BLOX Racing TPS for the 2002-2006 RSX Type-S and Civic Si (EP3) and its updated Version 2; the BBK 86-93 Mustang 5.0 TPS for the Fox-body throttle body; the TwinPower TPS replacing H-D 27659-07 for Touring and Softail; and the Haltech contactless motorsport sensor with an 8mm D-shaft for standalone builds.

How to choose

  • Direct replacement vs. universal. If you want plug-and-play, pick a sensor listed for your car or bike - the BLOX Honda/Acura, BBK Mustang and TwinPower Harley units are application-specific.
  • Contact vs. contactless. The Haltech unit is a contactless motorsport sensor with an 8mm D-shaft and CW/CCW rotation, aimed at standalone or custom throttle setups rather than a stock harness swap.
  • Budget spread. The lower end near $69 covers straightforward OE-style replacements; the higher end near $224 reflects the motorsport contactless piece.

Six of the eight listings carry fitment data, with top vehicles including the Ford Mustang, Honda Accord, Acura RSX, Honda CR-V, Honda Element, Honda Civic, and Harley-Davidson Touring and Softail across roughly 1986 to 2016.

What else you may need

A TPS often gets touched during broader engine work. If you are chasing fuel delivery alongside a rough idle, look at Fuel Pumps. For a full teardown, Head Gaskets and Gasket Kits keep the reseal covered, and Pistons come into play on a rebuild. Plumbing and mounting hardware live under Adapters and Fittings. Browse everything under Engine Components.

Fitment and ordering

Not sure which sensor matches your throttle body or harness? Call 813-535-5801 or use contact us before you order. All orders ship free, and Affirm and Katapult financing is available if you want to spread it out.