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Air and Fuel› Intake Manifolds and Components
Holley
MAP SENSOR, 2.5 BAR FOR GM LS
SKU: H00E 870021
Easy — 1–2 hours
Overview
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Part #: 870021
The pressure inside the intake manifold is an extremely important input to the ECU. This sensor will respond to changes in manifold pressures and relay the information to the ECU in the form of a voltage signal ranging from 1-5 volts. This sensor will handle applications up to 25 lbs. of boost. Part # 558-416 will be required when using a Holley EFI system.
Features:
- Utilizes Stock Attaching Points
- Ideal For Applications Up To 25lbs Of Boost
- This Sensor Monitors Manifold Vacuum Varying Output Voltage To The ECU
Map Sensor - 2.5 bar - Up to 25 psi Boost - Sniper EFI Intake - GM LS-Series - Each
Vehicle Symptoms
- Check engine light on with reduced power
- Rough idle or stalling under boost
- Engine runs lean or rich at high load
- Boost gauge reading erratic or inaccurate
- Engine hesitates or surges during acceleration
Diagnostic Codes
- P0105 – Manifold Absolute Press/Barometric Press Ckt
- P0106 – Manifold Absolute Press/Barometric Press Range/Perf
- P0107 – Manifold Absolute Press/Barometric Press Ckt Low In
- P0108 – Manifold Absolute Press/Barometric Press Ckt High In
- P0109 – Manifold Absolute Press/Barometric Press Ckt Intermittent
Relevant Conversations
- P0106 code after Holley Sniper install
- Holley Sniper MAP sensor 870021 replacement
- Sniper EFI running rough under boost
- boost gauge reading wrong – is MAP sensor bad?
- Holley 2.5 bar MAP sensor vs 1 bar
- How to test Holley MAP sensor voltage
- Sniper EFI tune after MAP sensor swap
- Holley 870021 vs 558-416 harness
- Sniper idle surge fix – new MAP sensor
- Best MAP sensor for 25 psi turbo build
Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
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Specifications
| Brand | Holley |
| Part Number | H00E 870021 |
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