Def Tester(12)
Uses item details. Price when purchased online
Ancel Wireless Bluetooth OBD2 Scanner + Car Battery Tester 12V 100-2000CCA Code Reader Check Engine Light Full OBD2 Function Trip Computer Car Health Monitor & Real-Time Performance Monitor $85.99 Was $159.99
Sponsored
Now$8599
current price Now $85.99, Was $159.99$159.99
Ancel Wireless Bluetooth OBD2 Scanner + Car Battery Tester 12V 100-2000CCA Code Reader Check Engine Light Full OBD2 Function Trip Computer Car Health Monitor & Real-Time Performance Monitor
74.7 out of 5 Stars. 7 reviews
Autel AL539B OBD2 Scanner 3-in-1 Battery Tester Avometer Full OBDII Diagnosis and Circuit Starting & Charging Systems Test for 12 Volts Batteries $89.99 Was $105.79
Sponsored
Now$8999
current price Now $89.99, Was $105.79$105.79
Autel AL539B OBD2 Scanner 3-in-1 Battery Tester Avometer Full OBDII Diagnosis and Circuit Starting & Charging Systems Test for 12 Volts Batteries
554.6 out of 5 Stars. 55 reviews
Autel AL529HD AutoLink Heavy Duty Vehicle Upgraded AL519/AL529 Compatible SAE-J1939/J1708 Code Reader and Emission Tester OBD2 Scanner Read/Erase DTCs Freeze Frame Data Live Data Multilingual menu $109.97
Sponsored
$10997
current price $109.97Autel AL529HD AutoLink Heavy Duty Vehicle Upgraded AL519/AL529 Compatible SAE-J1939/J1708 Code Reader and Emission Tester OBD2 Scanner Read/Erase DTCs Freeze Frame Data Live Data Multilingual menu
TOPDON AL500B Battery Tester 2 in 1 Car Diagnostic Code Reader, OBD2 Scanner, 12V Battery Tests, 12V/24V Cranking & Charging TestsFull OBDII Diagnosis, $82.99
Sponsored
$8299
current price $82.99TOPDON AL500B Battery Tester 2 in 1 Car Diagnostic Code Reader, OBD2 Scanner, 12V Battery Tests, 12V/24V Cranking & Charging TestsFull OBDII Diagnosis,
35 out of 5 Stars. 3 reviews
Thexton Manufacturing TH109 Pocket Size DEF Tester $18.92
$1892
current price $18.92Thexton Manufacturing TH109 Pocket Size DEF Tester
B3C Fuel Solutions DEF Contamination Test Strips 100 Count, Diesel Exhaust Fluid Purity Tester for Trucks, Fleets, Heavy Equipment, Fast On-Site Results $60.98
$6098
current price $60.98B3C Fuel Solutions DEF Contamination Test Strips 100 Count, Diesel Exhaust Fluid Purity Tester for Trucks, Fleets, Heavy Equipment, Fast On-Site Results
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ANCEL AD410 Pro Automotive Diagnostic Tool with OBDII Functions, Battery Tester $79.99 Was $158.99
Sponsored
Now$7999
current price Now $79.99, Was $158.99$158.99
ANCEL AD410 Pro Automotive Diagnostic Tool with OBDII Functions, Battery Tester
35 out of 5 Stars. 3 reviews
AUTOOL AS505 Digital Automotive Transmission Fluid Tester Oil Transparency Analyzer W/ High Precision Probe 2.8-inch Backlit Screen for Car Gasoline Diesel Engine From $19.99
Sponsored
From$1999
AUTOOL AS505 Digital Automotive Transmission Fluid Tester Oil Transparency Analyzer W/ High Precision Probe 2.8-inch Backlit Screen for Car Gasoline Diesel Engine
74 out of 5 Stars. 7 reviews
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TOPDON BT300P Car Battery Tester 12V 24V 100-2000CCA Lead-Acid Battery, Scan Tool with Built-in Printer, Automatic Reverse Polarity Protection $88.99 Was $110.00
Sponsored
Now$8899
current price Now $88.99, Was $110.00$110.00
TOPDON BT300P Car Battery Tester 12V 24V 100-2000CCA Lead-Acid Battery, Scan Tool with Built-in Printer, Automatic Reverse Polarity Protection
84.4 out of 5 Stars. 8 reviews
Woudy 2 in 1 OBD2 Scanner+Battery Tester, 3.2" Big Screen OBD2 Diagnostic Tool Engine Code Reader EVAP Digital Diagnosis DTC for Car Motorcycle&Truck $35.99
Sponsored
$3599
current price $35.99Woudy 2 in 1 OBD2 Scanner+Battery Tester, 3.2" Big Screen OBD2 Diagnostic Tool Engine Code Reader EVAP Digital Diagnosis DTC for Car Motorcycle&Truck
Performance Tool W80579 Flex Drive Compression Tester $18.00 $22.50/lb
Sponsored
$1800
current price $18.00$22.50/lb
Performance Tool W80579 Flex Drive Compression Tester
34 out of 5 Stars. 3 reviews
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VEVOR Compression Tester Adapter Kit, 9 Pcs Automotive Engine Cylinder Leak Down Compression Test, Accurate Dual Scale Pressure Gauge 0-300 psi, with Long Reach Hoses and Case for Engine Cylinders $44.90
Sponsored
$4490
current price $44.90VEVOR Compression Tester Adapter Kit, 9 Pcs Automotive Engine Cylinder Leak Down Compression Test, Accurate Dual Scale Pressure Gauge 0-300 psi, with Long Reach Hoses and Case for Engine Cylinders
113.8 out of 5 Stars. 11 reviews
Other options to consider(78)
Openport 2.0 Code Reader Software for Car Diagnostic via USB, Chip Tuning, Flashing - OBD2 Cable Automotive Testing Tool Device to Install, Vehicle Control Engine Check Tester, No Internet Connection $30.99
$3099
current price $30.99Openport 2.0 Code Reader Software for Car Diagnostic via USB, Chip Tuning, Flashing - OBD2 Cable Automotive Testing Tool Device to Install, Vehicle Control Engine Check Tester, No Internet Connection
Digital Bridge Tweezer Multimeter Instrument for Testing Auto Recognition $47.08
$4708
current price $47.08Digital Bridge Tweezer Multimeter Instrument for Testing Auto Recognition
Clearance SIISLL Nickel Plated Shaft Inline Spark Tester with Fool Proof Pickup Coil $10.99 Was $12.99
Now$1099
current price Now $10.99, Was $12.99$12.99
SIISLL Nickel Plated Shaft Inline Spark Tester with Fool Proof Pickup Coil
74.4 out of 5 Stars. 7 reviews
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Biltek 2 In 1 Brake Bleeder & Vacuum Pump Gauge Test Tuner Kit Tools DIY Hand Tools New Auto Hand Held Brake Bleeder & Vacuum Pump Gauge Test Tester Tuner Tool Kit Set $21.91
$2191
current price $21.91Biltek 2 In 1 Brake Bleeder & Vacuum Pump Gauge Test Tuner Kit Tools DIY Hand Tools New Auto Hand Held Brake Bleeder & Vacuum Pump Gauge Test Tester Tuner Tool Kit Set
44 out of 5 Stars. 4 reviews
Clearance Hemoton Brake Fluid Test Def Extractor Transmission Car Black $7.18 Was $9.59
Now$718
current price Now $7.18, Was $9.59$9.59
Hemoton Brake Fluid Test Def Extractor Transmission Car Black
SEWCHICS Multimeter Combination Line with Copper Needle and Clip Insulated Handle for Easy Multimeter Testing $9.59 Was $10.90
Now$959
current price Now $9.59, Was $10.90$10.90
SEWCHICS Multimeter Combination Line with Copper Needle and Clip Insulated Handle for Easy Multimeter Testing
AUTOOL BT210 Automotive Power Circuit Probe Kit,12V 24V DC Electrical System Tool, Digital Voltage Short Finder, Car Fuse Relay Tester,9-30V Circuit Tester, LED From $18.79
6 options
Available in additional 6 optionsFrom$1879
AUTOOL BT210 Automotive Power Circuit Probe Kit,12V 24V DC Electrical System Tool, Digital Voltage Short Finder, Car Fuse Relay Tester,9-30V Circuit Tester, LED
1664.1 out of 5 Stars. 166 reviews
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Dorman 86593 Electrical Circuit Testing Tool Green $6.12
$612
current price $6.12Dorman 86593 Electrical Circuit Testing Tool Green
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LiquiDynamics 21893 Diesel Exhaust Fluid Conductivity Meter - Model No. 195601 $260.01
$26001
current price $260.01LiquiDynamics 21893 Diesel Exhaust Fluid Conductivity Meter - Model No. 195601
AUTOOL Automotive Smoke Leak Detector, DC12V Auto Leak Detector Fuel Pressure Tester with Fuel Pressure Gauge, Mini EVAP Smoke Machine Leak Tester for Cars Motorcycles Trucks $87.00
$8700
current price $87.00AUTOOL Automotive Smoke Leak Detector, DC12V Auto Leak Detector Fuel Pressure Tester with Fuel Pressure Gauge, Mini EVAP Smoke Machine Leak Tester for Cars Motorcycles Trucks
25 out of 5 Stars. 2 reviews
Best seller AUTOOL Car Smoke Machine, EVAP Smoke Leak Detector, DC 12V Automotive Smoke Leak Machine, Portable Fuel Pipe Vacuum Smoke Diagnostic for Cars Motorcycles Trucks From $51.99
6 options
Available in additional 6 optionsFrom$5199
AUTOOL Car Smoke Machine, EVAP Smoke Leak Detector, DC 12V Automotive Smoke Leak Machine, Portable Fuel Pipe Vacuum Smoke Diagnostic for Cars Motorcycles Trucks
754.4 out of 5 Stars. 75 reviews
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Elitech Infrared Refrigerant Leak Detector HVAC Halogen Tester Gas Selectable $245.00
$24500
current price $245.00Elitech Infrared Refrigerant Leak Detector HVAC Halogen Tester Gas Selectable
Pen Type Digital Multimeter 4000 Counts AC/DC Voltage Ohm Diode Tester Auto Range Multi Tester $36.93
$3693
current price $36.93Pen Type Digital Multimeter 4000 Counts AC/DC Voltage Ohm Diode Tester Auto Range Multi Tester
Voltage Tester LCD Display Voltage Detector Non Contact AC Voltage Sensor Pen Live Wire Check $71.19
$7119
current price $71.19Voltage Tester LCD Display Voltage Detector Non Contact AC Voltage Sensor Pen Live Wire Check
Best seller CNBJ-611 Automotive Fuse Current Tester Car Leakage Analyzer Fault Tester Automotive Fuse Current Testing Tool $5.35 Was $10.96
Now$535
current price Now $5.35, Was $10.96$10.96
CNBJ-611 Automotive Fuse Current Tester Car Leakage Analyzer Fault Tester Automotive Fuse Current Testing Tool
254.6 out of 5 Stars. 25 reviews
[Second Hand] TS710 Heavy Duty Truck Diesel Diagnostic Scanner DPF Regen Actuation Test + OM117 Check Engine Code Reader $472.00
![[Second Hand] TS710 Heavy Duty Truck Diesel Diagnostic Scanner DPF Regen Actuation Test + OM117 Check Engine Code Reader](https://i5.walmartimages.com/seo/Second-Hand-TS710-Heavy-Duty-Truck-Diesel-Diagnostic-Scanner-DPF-Regen-Actuation-Test-OM117-Check-Engine-Code-Reader_f21efd4e-0f4a-4faf-9a3d-7547914e9952.a3004c23f02dc9c2337cf317e0c75138.jpeg?odnHeight=576&odnWidth=576&odnBg=FFFFFF)
$47200
current price $472.00[Second Hand] TS710 Heavy Duty Truck Diesel Diagnostic Scanner DPF Regen Actuation Test + OM117 Check Engine Code Reader
Auto Meter Battery/Electrical System Tester - SB-5/2 $768.60
$76860
current price $768.60Auto Meter Battery/Electrical System Tester - SB-5/2
15 out of 5 Stars. 1 reviews
Rhino Tuff Tanks RTT-7046 DEF K24 IN-LINE METER KIT CONNECTED TO NOZZLE $795.63
$79563
current price $795.63Rhino Tuff Tanks RTT-7046 DEF K24 IN-LINE METER KIT CONNECTED TO NOZZLE
Pen Type Auto Range Voltage Tester LCD Professional AC/DC Voltage Electronic Diode $47.40
$4740
current price $47.40Pen Type Auto Range Voltage Tester LCD Professional AC/DC Voltage Electronic Diode
Clearance XiYing 2-In-1 Digital Voltage Tester Pen, Ac Voltage Detection, Live Wire Finder, Non-Contact Ef Sensor, Continuity Test, with Interchangeable Bits, for Electricians and Diy, 1 Count From $13.39
From$1339
XiYing 2-In-1 Digital Voltage Tester Pen, Ac Voltage Detection, Live Wire Finder, Non-Contact Ef Sensor, Continuity Test, with Interchangeable Bits, for Electricians and Diy, 1 Count
High Precise Portability Transistor Tester JFET,Meter Tester For Resistors Capacitors Diode With LCD Display $34.61
$3461
current price $34.61High Precise Portability Transistor Tester JFET,Meter Tester For Resistors Capacitors Diode With LCD Display
Performance Tool W80579 Flex Drive Compression Tester $18.00 $22.50/lb
$1800
current price $18.00$22.50/lb
Performance Tool W80579 Flex Drive Compression Tester
34 out of 5 Stars. 3 reviews
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AUTOOL Automotive 16 Pin OBD2 Protocol Diagnostic Detector ,Breakout Box OBD line Tester for OBD2 Scanner, Car Code Reader, Car Computer Reader From $32.49
4 options
Available in additional 4 optionsFrom$3249
AUTOOL Automotive 16 Pin OBD2 Protocol Diagnostic Detector ,Breakout Box OBD line Tester for OBD2 Scanner, Car Code Reader, Car Computer Reader
564.3 out of 5 Stars. 56 reviews
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AutoLine Pro HyperSmoke™ Automotive Smoke Machine EVAP Vacuum Leak Tester – Adjustable Pressure – OEM Approved Smoke Fluid – Built-in Air Compressor Motor - Includes Smoke Fluid x2 From $52.99
4 options
Available in additional 4 optionsFrom$5299
AutoLine Pro HyperSmoke™ Automotive Smoke Machine EVAP Vacuum Leak Tester – Adjustable Pressure – OEM Approved Smoke Fluid – Built-in Air Compressor Motor - Includes Smoke Fluid x2
554.4 out of 5 Stars. 55 reviews
AUTOOL SDT50 Smoke Leak Detecter, Car EVAP Smoke Machine, Automotive Oil Pipe Leakage Analyze Locator, Fuel Pressure Tester Built-In Air Pump for Vehicle Air Tightness Diagnosis $49.99
$4999
current price $49.99AUTOOL SDT50 Smoke Leak Detecter, Car EVAP Smoke Machine, Automotive Oil Pipe Leakage Analyze Locator, Fuel Pressure Tester Built-In Air Pump for Vehicle Air Tightness Diagnosis
104.3 out of 5 Stars. 10 reviews
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Performance Tool W80584 Deluxe Compression Tester Kit $50.63 $19.47/lb
$5063
current price $50.63$19.47/lb
Performance Tool W80584 Deluxe Compression Tester Kit
15 out of 5 Stars. 1 reviews
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Lang Tools (Star Products) TU-32-21 - Fuel System Restriction Test Gauge - Compuchek $170.57 $170.57/count
$17057
current price $170.57$170.57/count
Lang Tools (Star Products) TU-32-21 - Fuel System Restriction Test Gauge - Compuchek
Best seller OBD2 Scanner with Upgrade Battery Tester - Diagnostic Tool for Cars That Check Engine Light & Emissions Readiness Read and Clears Vehicle Error Codes for All OBD II Protocol Vehicles Since 1996 $19.99
$1999
current price $19.99OBD2 Scanner with Upgrade Battery Tester - Diagnostic Tool for Cars That Check Engine Light & Emissions Readiness Read and Clears Vehicle Error Codes for All OBD II Protocol Vehicles Since 1996
1984.5 out of 5 Stars. 198 reviews
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[Second Hand] ANCEL HD120 Heavy Duty Truck Scanner All System DPF Regen Diesel Diagnostic Tool + BM310 Battery Tester $177.00
![[Second Hand] ANCEL HD120 Heavy Duty Truck Scanner All System DPF Regen Diesel Diagnostic Tool + BM310 Battery Tester](https://i5.walmartimages.com/seo/Second-Hand-ANCEL-HD120-Heavy-Duty-Truck-Scanner-All-System-DPF-Regen-Diesel-Diagnostic-Tool-BM310-Battery-Tester_8e9070ea-0207-482d-9989-e40576f0f438.2bc192e5b5bdef39574677d7cd72cd7d.jpeg?odnHeight=576&odnWidth=576&odnBg=FFFFFF)
$17700
current price $177.00[Second Hand] ANCEL HD120 Heavy Duty Truck Scanner All System DPF Regen Diesel Diagnostic Tool + BM310 Battery Tester
ANCEL EVAP Smoke Machine Car Leak Dector Vacuum Pipe Leak Diagnostic, Car Fuel Pressure Gauge Tester, Smoke Machine for Automotive Truck $99.99
$9999
current price $99.99ANCEL EVAP Smoke Machine Car Leak Dector Vacuum Pipe Leak Diagnostic, Car Fuel Pressure Gauge Tester, Smoke Machine for Automotive Truck
35 out of 5 Stars. 3 reviews
Non-Contact AC Voltage Tester Digital Pen LCD Display Wire Breakpoint Finder Sound and Light Alarm $35.33
$3533
current price $35.33Non-Contact AC Voltage Tester Digital Pen LCD Display Wire Breakpoint Finder Sound and Light Alarm
VD03 Digital Control Non Contact Voltage Tester Pen Detect LED Light Audible Alarm $25.39
$2539
current price $25.39VD03 Digital Control Non Contact Voltage Tester Pen Detect LED Light Audible Alarm
Klein Tools NCVT3P Dual Range Non Contact Voltage Tester, 12 - 1000V AC Pen, Flashlight, Audible and Flashing LED Alarms, Pocket Clip $50.95
$5095
current price $50.95Klein Tools NCVT3P Dual Range Non Contact Voltage Tester, 12 - 1000V AC Pen, Flashlight, Audible and Flashing LED Alarms, Pocket Clip
2026 Upgrade Automotive Circuit Fault Probe Tester, Portable High-Precision 20a 48v Car Circuit Probe Tester with Led Display & Front Lighting, Water Proof Car Relay Fuse Blade Checker (1pcs) From $11.99
From$1199
2026 Upgrade Automotive Circuit Fault Probe Tester, Portable High-Precision 20a 48v Car Circuit Probe Tester with Led Display & Front Lighting, Water Proof Car Relay Fuse Blade Checker (1pcs)
VEVOR Diesel Engine Compression Tester, 18 pcs Cylinder Pressure Test Tool Kit, with 0-1000 psi Gauge and Adapters, Diesel Injector Tester Check Cylinders in Diesel Trucks, Tractors, Equipment $35.60 $35.60/ca
$3560
current price $35.60$35.60/ca
VEVOR Diesel Engine Compression Tester, 18 pcs Cylinder Pressure Test Tool Kit, with 0-1000 psi Gauge and Adapters, Diesel Injector Tester Check Cylinders in Diesel Trucks, Tractors, Equipment
44.8 out of 5 Stars. 4 reviews
AUTOOL BT360 Automotive Battery Tester, 8V-29V Digital Batteries Analyzer, 30-2000CCA Charging & Cranking Detector for Car Motorcycle Truck and More 4-300 AH From $15.99
7 options
Available in additional 7 optionsFrom$1599
AUTOOL BT360 Automotive Battery Tester, 8V-29V Digital Batteries Analyzer, 30-2000CCA Charging & Cranking Detector for Car Motorcycle Truck and More 4-300 AH
1264.4 out of 5 Stars. 126 reviews
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Auto Off LCD Backlit Screen Voltages Test Meter Digital Measuring Pen Voltages Live Wire Detector Voltages Probes Tester From $12.48
From$1248
Auto Off LCD Backlit Screen Voltages Test Meter Digital Measuring Pen Voltages Live Wire Detector Voltages Probes Tester
2026 Automotive Circuit Fault Probe Tester, 20A 48V Car Relay Fuse Blade Checker High Precision, 2-in-1 Portable Current Waterproof Diagnostic Tool with LED Display Lighting for Vehicle (1pcs) From $18.88
From$1888
2026 Automotive Circuit Fault Probe Tester, 20A 48V Car Relay Fuse Blade Checker High Precision, 2-in-1 Portable Current Waterproof Diagnostic Tool with LED Display Lighting for Vehicle (1pcs)
11 out of 5 Stars. 1 reviews
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