RaceCar Gauges, Gauge Panels, Warning Lights & Sending Units

Gauges, Panels, Lights

DiscoveryParts offers a comprehensive selection of gauges for your racecar. You've taken endless hours setting your car up to run effectively and these gauges - oil pressure, oil temperature, water temperature, and even a digital air/fuel ratio gauge - help you keep an eye on all of the critical information you need to run at high performance levels.

Longacre SMi Pressure Sensor Wire
Do you need a replacement pressure sensor wire for your Longacre SMi Pressure Gauge? This AccuTech™ SMi™ Gauge pressure sensor wire with quick disconnect lead connects your pressure sensor and gauge harness together. Most commonly used to connect a Longacre SMI Fuel and Oil Pressure Gauge lead to a Longacre sensor.
$9.95
Longacre SMi Fuel Press Gauge - 0-100 psi
Last items in stock
Longacre fuel pressure gauges by Accutech has 3 warning lights, easy to program and easy to read in race conditions with true race quality, the Longacre 46538 Fuel Pressure is the best EFI fuel pressure gauge we have found.
$159.95
Longacre SMi OP/WT Alum Gauge Panel Kit
Last items in stock
The Longacre 44460 gauge panel is pre-wired and has a 0-100psi Oil Pressure Gauge and a 100°-280° Water Temperature Gauge. This full size lightweight  gauge panel uses the large 2 5/8" SMi stepper motor gauges and electrical sending units for ease of installation. 
$299.95
AEM Wideband UEGO Controller Kit
AEM Electronics 30-2310 - AEM Electronics Inline Wideband UEGO Controller, Oxygen Sensor, Single Channel, Wideband Control, 0-5V, Each
$203.70
Longacre SMi Memory Tach - Black
Longacre 0-10K equal radial SMi™ Stepper motor techometer, 44384, use a small electric motor to drive the pointer. It is more precise than the more common 'aircore' instruments whose accuracy can be affected by the windings. Many professional race teams, NASCAR etc. are switching to this style of tach for the improved accuracy and response. 
$199.95
Longacre Aluminum Brake Balance Panel
Longacre Dual Brake Pressure Gauge Panel in Lightweight ABS panel with lightweight aluminum panel. Includes two 2 1/2" 1500 psi liquid filled gauges and fittings with bleeders. Get your brake balance right no matter what track conditions are. 
$99.95
Innovate MTX-L Digital Wideband O2 Air/Fuel Gauge Kit
The fastest and 100% digital wideband air/fuel ratio kit comes complete with a Bosch LSU 4.9 wideband O2 sensor, waterproof gauge, 2 fully programmable linear analog outputs and is the fastest reading Wideband O2 to date. Innovate Motorsports Digital MTX Series Air/Fuel Ratio Gauge is 100% digital and ready for the track.
$219.00
AEM Digital Wideband O2 Air/Fuel Gauge Kit
This is the complete AEM wideband UEGO air/fuel ratio gauge kits including a new Bosch 4.9LSU sensor, weld in bung and all needed wiring. Don't let a lean out condition cost you an expensive engine change. Know your engine health early to save the racing budget for later. 
$194.90
Longacre SMi Temp Sensor 100° - 280°
Do you need a replacement temp sensor for your Longacre SMi H2O or Oil Temp Gauge? This AccuTech™ SMi™ Gauge temperature sensor only with quick disconnect lead and manifold sensor has a temperature range 100° - 280° and is most commonly used in water temperature in a race car. 
$39.95
Longacre SMi Temp Sensor 100° - 340°
Do you need a replacement temp sensor for your Longacre SMi H2O or Oil Temp Gauge? This AccuTech™ SMi™ Gauge temperature sensor only with quick disconnect lead and manifold sensor has a temperature range 100° - 340° and is most commonly used in oil temperature in a race car. 
$39.95
Switch Panel Pilot Light
Confirm Whether Or Not Your Pump, Electric Fan, or Any Circuit is Working In your Racecar with the Longacre Switch Panel Replacement Pilot Light Kit.
$10.95
Longacre SMi Pressure Sensor 0 - 100 psi
Do you need a replacement pressure sensor for your Longacre SMi Oil Pressure Gauge? This AccuTech™ SMi™ Gauge pressure sensor only with quick disconnect lead and manifold sensor has a pressure range 0 - 100 PSI and is most commonly used in oil pressure in a race car. 
$79.95
Longacre SMi Pressure Sensor Wire Harness 0-100 psi
Do you need a replacement pressure sensor wire from your Longacre SMi Pressure Gauge to the sensor adapter? This AccuTech™ SMi™ 0-100PSI pressure sensor wire harness with quick disconnect connects your pressure sensor adapter (QD) and SMI 100 psi pressure gauge together. Most commonly used to connect a Longacre SMI 100 PSI Oil Pressure Gauge to to a Longacre sensor adapter.
$9.95
Longacre SMi Temperature Sensor Wire Harness
Do you need a replacement temperature sensor wire from your Longacre SMi Temperature Gauge to the sensor adapter? This AccuTech™ SMi™ temperature sensor wire harness with quick disconnect connects your temperature sensor and SMI temperatrure pressure gauge together. Most commonly used to connect a Longacre SMI Oil or Water Pressure Gauge to to a Longacre temperature sensor.
$9.95
AutoMeter Temp Sender for Full Sweep Gauges
Direct replacement sending unit for all current auto meter full sweep 270° electric gauges. This 1/8 NPT electrical sending unit is commonly used in AutoMeter full sweep 270° electrical gauges like Oil Temperature and Water Temperature.
$25.95
AutoMeter Wiring Harness for Stepper Motor Gauges
Direct replacement wiring harness from AutoMeter for their Stepper Motor Temperature Gauges. This replacement harness is a simple, snap and connect installation to your AutoMeter Temperature Gauge and the sending unit.
$23.95
AutoMeter Pressure Sender for Full Sweep Gauges
Direct replacement pressure sending unit for all current auto meter full sweep 270° electric gauges. This 1/8 NPT electrical sending unit is commonly used in AutoMeter full sweep 270° electrical gauges like Oil or Fuel Pressure.
$119.95
AutoMeter Wiring Harness for Stepper Motor Gauges
Direct replacement wiring harness from AutoMeter for their Stepper Motor Temperature Gauges. This replacement harness is a simple, snap and connect installation to your AutoMeter Temperature Gauge and the sending unit.
$23.95
Innovate Motorsports 4.9 Replacement Oxygen Sensor
Bosch LSU 4.9 5-wire, wide-band O2 sensor is compatible with the LM-2, LC-2, and MTX-L, SCG-1, DLG-1, PSB-1, and PSN-1. What Innovate O2 sensor do I have? This is LSU 4.9 sensor that is 1" at its widest point. To make identification even easier, Innovate has "4.9" molded into the connector. 
$84.00
AutoMeter Gauge Mounting Brackets 2 5/8"
AutoMeter gauge mounting brackets are designed to install your AutoMeter gauges in a flat mounting panel. They are constructed from molded black plastic and include aluminum thumb nuts and washers for easy installation. 
$9.95
Water Temp Warning Light Kit 230° 3/8" NPT
Everything is fine in the race car and you are just putting in laps, hitting your marks, and being smart. Then a coolant temperature warning light comes on. A 230° coolant temperature warning light is used to let you know when you're on the way to a costly rebuild if not acted upon.
$24.95
Longacre Tachometer 'Shock Ring' Mounting Bracket
Now you can easily mount your Longacre SMI Tachometer to your steering column or dashboard. Using a lightweight aluminum mount tab and rubber cushion to cradle your tachometer, the Longacre Shock Ring mount bracket is ready to turn laps on the roughest road, dirt, Baja or terra-cross tracks.
$14.95
AutoMeter 2242 Electrical Pressure Sender
Direct replacement pressure sending unit for all current auto meter 0-100psi oil pressure short sweep gauges. This 1/8 NPT electrical sending unit is commonly used in AutoMeter short sweep gauges like the Autometer 4327 electrical oil pressure gauge.
$43.95
Longacre AccuTech Stepper Motor Tachometer Filter
Longacre 52-44410 tach filter prevents erratic gauge operation by filtering out dirty electrical interference from selected hi-power ignition systems. Simply installing a tach filter will clean up the noisy/dirty signal and therefore smooth out the reading on the gauge. This Longacre 52-44410 filter for use with AccuTech™ SMi™ and DLi™ memory tachometers.
$39.99