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Cooling System Diagnostics

If you need great cooling system parts or diagnostic tools, you’re on the right page. We also offer a large selection of stant radiator pressure tester adapters. We want to make sure that you have everything that you need to keep your vehicle running smoothly and safely.

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Thexton THX101 ANTIFREEZE TESTER ETHYLENE GLYCOL POCKET TYPE

Cold-Chek® Anti-Freeze Coolant Tester

List Price: $8.59
Our Price: $5.77
Thexton THX100 ANTIFREEZE TESTER PROPYLENE GLYCOL POCKET TYPE

Cold-Chek® Propylene Glycol Anti-Freeze and Coolant Tester

List Price: $9.00
Our Price: $6.05
K Tool International KTI70211 ANTIFREEZE TESTER

Antifreeze Tester

List Price: $7.85
Our Price: $6.47
Thexton THX102 Cold-Chek® Professional Anti-Freeze Coolant Tester

Thexton 102 Cold-Chek® Professional Anti-Freeze Coolant Tester - THX102

List Price: $11.45
Our Price: $7.70
E-Z Red EZRS102 ANTI FREEZE HYDROMETER

Antifreeze Hydrometer

List Price: $13.08
Our Price: $8.63
ATD Tools Radiator Hose Pinch-Off Pliers ATD-5380 Radiator Hose Pinch-Off Pliers

ATD Tools Radiator Hose Pinch-Off Pliers ATD-5380

List Price: $15.29
Our Price: $10.97
Thexton THX106 ANTIFREEZE TESTER ETHYLENE GLYCOL DISC TYPE

Cold-Chek® Disc-Type Anti-Freeze Tester

List Price: $21.00
Our Price: $11.27
Thexton THX107 ANTIFREEZE TESTER PROPYLENE GLYCOL DISC TYPE

Cold-Chek® Propylene Glycol Anti-Freeze and Coolant Tester

List Price: $21.00
Our Price: $11.27
Lisle 22500 - LIS22500 Extended Thermostat Gasket Remover

Lisle 22500 Extended Thermostat Gasket Remover - LIS22500

List Price: $31.20
Our Price: $23.47
Plews Edelmann 75-025 3 Gallon Plastic Radiator Filler - PLW75-025 Plews Edelmann 75-025 3 Gallon Plastic Radiator Filler

Plews Edelmann 75-025 3 Gallon Plastic Radiator Filler - PLW75-025

List Price: $50.10
Our Price: $27.50
Lisle Water Pump Sprocket Holder for GM Ecotec LIS13800 Water Pump Tool for Ecotec

Lisle Water Pump Sprocket Holder for GM Ecotec LIS13800

List Price: $48.75
Our Price: $36.67
Assenmacher ASSFZ22 RADIATOR ADAPTER VOLKSWAGEN

Volkswagen & Audi Radiator Adapter

List Price: $49.00
Our Price: $45.22
Assenmacher ASSFZ25 RADIATOR ADAPTER VOLVO

Volvo & Saab Radiator Adapter

List Price: $49.00
Our Price: $45.22
ATD Tools Coolant Refractometer ATD-3705 Coolant Refractometer

ATD Tools Coolant Refractometer ATD-3705

List Price: $66.90
Our Price: $48.29
ATD Tools Hose Pinch-Off Pliers ATD-5465 Hose Pinch-Off Pliers

ATD Tools Hose Pinch-Off Pliers ATD-5465

List Price: $69.76
Our Price: $50.05
Stant STN12027 32MM ID FILLER ADAPTER(PTTA2

32mm ID Filler Adapter  PTTA2

List Price: $72.73
Our Price: $56.47
Assenmacher FZ 35 A - ASSFZ35A Cooling System Adapter

Assenmacher FZ 35 A Cooling System Adapter - ASSFZ35A

List Price: $68.00
Our Price: $64.60
Assenmacher BMW Tank Adapter ASSBMW350 BMW Tank Adapter

Assenmacher BMW Tank Adapter ASSBMW350

List Price: $68.50
Our Price: $65.08
Mityvac MV4560 - MITMV4560 Radiator / Cooling System Pressure Test Kit

Mityvac MV4560 Radiator/Cooling System Pressure Test Kit - MITMV4560

List Price: $104.98
Our Price: $70.19
Assenmacher ASSFZ41 RADIATOR ADAPTER AUDI

Audi Radiator Adapter

List Price: $75.40
Our Price: $71.63
OTC GM Water Pump Holding Tool OTC6616 Water Pump Holding Tool

OTC GM Water Pump Holding Tool OTC6616

List Price: $113.88
Our Price: $76.04
E-Z Red B108 EZRB108 Hand Held Refractometer

E-Z Red B108 3-in-1 Refractometer - EZRB108

List Price: $110.52
Our Price: $82.84
Mastercool 69925 Multiple Flushing & Leak Test Adapter Kit - MSC43301-A Mastercool 69925 Multiple Flushing & Leak Test Adapter Kit

Mastercool 69925 Multiple Flushing & Leak Test Adapter Kit for Flush Machine - MSC-69925

List Price: $169.46
Our Price: $111.07
UVIEW 550500 - UVU550500 AirLift II Economy Refiller

UVIEW 550500 AirLift II Economy Refiller - UVU550500

List Price: $157.88
Our Price: $121.78
OTC 5025 - OTC5025 OTC DEF Refractometer

OTC 5025 DEF Refractometer - OTC5025

List Price: $205.09
Our Price: $123.41
ATD Tools Universal Cooling System Pressure Test Kit ATD-3300 Universal Cooling System Pressure Test Kit

ATD Tools Universal Cooling System Pressure Test Kit ATD-3300

List Price: $178.19
Our Price: $128.61
UVIEW 550000 - UVU550000 Airlift Cooling Refiller System

UVIEW 550000 Airlift Cooling Tester Refiller System - UVU550000

List Price: $279.52
Our Price: $181.69
Mityvac MITMVA4640 Cooling System Adapters - Extended Kit

Mityvac Cooling System Adapters - Extended Kit MITMVA4640

List Price: $250.14
Our Price: $197.19
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OTC Cooling System Pressure Tester OTC7991 Cooling System Pressure Tester

OTC Cooling System Pressure Tester OTC7991

List Price: $317.49
Our Price: $202.15
Mityvac MV4535 - MITMV4535 Cooling System AirEvac Kit

Mityvac MV4535 Cooling System Air Evac and Refill Kit - MITMV4535

List Price: $310.26
Our Price: $221.21
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Mityvac MV4530 - MITMV4530 Cooling System Pressure Test Kit

Mityvac MV4530 Cooling System Pressure Test Kit - MITMV4530

List Price: $320.21
Our Price: $226.96
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Mityvac MITMVA4620 European System Adapter Kit

Mityvac European System Adapter Kit - MITMVA4620

List Price: $301.75
Our Price: $237.86
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Robinair 17607 Universal Flushing Adapter Kit - ROB-17607 Robinair 17607 Universal Flushing Adapter Kit

Robinair 17607 Universal Flushing Adapter Kit - ROB-17607

List Price: $408.00
Our Price: $262.27
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Mityvac MVA4630 - MITMVA4630 Cap Adapter Kit - European Caps

Mityvac MVA4630 Cap Adapter Kit - European Caps - MITMVA4630

List Price: $318.97
Our Price: $281.48
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Astro Pneumatic 78585 - AST78585 Radiator Pressure Tester & Vacuum Type Cooling Kit

Astro Pneumatic 78585 Radiator Pressure Tester & Vacuum Type Cooling Kit - AST78585

List Price: $492.23
Our Price: $281.60
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Mastercool 43301-A 27 Piece Master Radiator Pressure Test Kit - MSC43301-A Mastercool 43301-A 27 Piece Master Radiator Pressure Test Kit

Mastercool 43301-A 27 Piece Master Radiator Pressure Test Kit - MSC43301-A

List Price: $384.89
Our Price: $287.25
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OTC Mercedes-Benz and BMW Fan Clutch Service Kit OTC6985 7pc Mercedes BMW Fan Clutch Set

OTC Mercedes-Benz and BMW Fan Clutch Service Kit OTC6985

List Price: $424.01
Our Price: $319.41
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Mityvac MV4525 - MITMV4525 Coolant System Test, Diagnostic and Refill Kit

Mityvac MV4525 Coolant System Test, Diagnostic and Refill Kit - MITMV4525

List Price: $540.98
Our Price: $420.85
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We also offer the perfect selection of tools to use in your auto shop or garage. Our prices are affordable, and we offer one of the largest selections of auto items around. However, we never skimp on quality.

We carry great options from brands that are known for crafting top-quality and reliable items. We only bring you items from trusted brands, because we want you to be able to get pieces that will last you for as long as you need them. We make it easy for you to get all of the cooling system parts and other items that you need for your shop or home with one purchase. All you have to do is create an order online, and we will ship all of your items straight to your shop or home.

Whether you need a head repair kit, a check valve, an antifreeze hydrometer, a drain plug socket, or a petcock socket set, we will have some great options to meet your needs. Each of our items has a convenient description to help you understand its specifications.

If you feel overwhelmed by our inventory of cooling system parts and Stant radiator pressure tester adapters, or if you are not sure which items are right for your auto shop or home garage, let us help you. Our dedicated staff members are always happy to assist you in finding the perfect items for your needs. Simply come into one of our locations or give us a call. With our top-notch products, friendly service, and affordable prices, there is no reason not to make Best Buy Automotive your first choice for your auto needs.