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Mazda Miata Thermostatic Oil Cooler Kit, 1999–2005

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Packaging
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Mazda Miata Thermostatic Oil Cooler Kit, 1999–2005
Mazda Miata Thermostatic Oil Cooler Kit, 1999–2005
Mazda Miata Thermostatic Oil Cooler Kit, 1999–2005
Mazda Miata Thermostatic Oil Cooler Kit, 1999–2005
Mazda Miata Thermostatic Oil Cooler Kit, 1999–2005
Mazda Miata Thermostatic Oil Cooler Kit, 1999–2005
Mazda Miata Thermostatic Oil Cooler Kit, 1999–2005
Mazda Miata Thermostatic Oil Cooler Kit, 1999–2005
Mazda Miata Thermostatic Oil Cooler Kit, 1999–2005

Regular Price: $483.60

Sale Price $411.95

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Installation Difficulty

  • Direct fit for the 1999–2005 Mazda Miata NB
  • Reduces oil temperatures by 10°F (5.6°C)
  • Mounting brackets also serve as ducting to channel air to cooler
  • Minimal pressure drop
  • Works with most aftermarket turbo kits
  • Pre-made stainless steel braided oil lines with durable -10AN fittings
  • Billet aluminum thermostatic oil sandwich plate allows oil to reach optimum temperature
  • Cooler available in either Sleek Silver or Stealth Black
  • Increases oil capacity by 0.5 qt
  • Mishimoto Lifetime Warranty

Mazda Miatas love track days, but with hot laps come hot oil temperatures. High oil temps can be detrimental to a vast majority of engine components, and a fried piston ring can turn your fun track day and into a costly repair. NB Miatas come with a stock liquid-to-liquid oil cooler, which is sufficient for daily driving, but just doesn’t cut it when it comes to more spirited driving.

During testing, this Miata oil cooler kit dropped oil temperatures 10°F (5.6°C) when tested on a 65 mph highway cruise. This Miata oil cooler set-up is definitely going to come in handy when you’re redlining your engine around the track. The design of the mounting bracket serves as ducting to channel air to the cooler, and it mounts the cooler away from the front bumper to save room for an intercooler. And who doesn’t want an intercooler, a turbo, and other forced induction bits? Speaking of forced induction, turbos can also heat-up oil, which makes an oil cooler a vital addition to your boosted Miata.

This Miata oil cooler kit features a billet aluminum thermostatic oil sandwich plate to ensure that your oil reaches optimum temperature before flowing to the cooler. Overcooled oil can be just as dangerous as overheated oil, making this feature especially important in colder climates. This Miata oil cooler kit also comes with pre-made stainless steel braided lines with durable -10AN fittings and the Mishimoto Lifetime Warranty, so you can depend on this cooler as much as you depend on your roadster.

Mishimoto Automotive (“Mishimoto”) warrants its products under this lifetime limited warranty policy (“Warranty Policy”). This Warranty Policy applies solely to: (i) Mishimoto Products purchased directly from Mishimoto or Mishimoto authorized dealers (each a “Mishimoto Product” and collectively, the “Mishimoto Products”) and (ii) the original purchaser of such Mishimoto Product (“Purchaser”). This Warranty Policy is non-transferable and all claims under this Warranty Policy must be accompanied by the original sales receipt. The terms and conditions of this Warranty Policy are subject to change by Mishimoto at any time without notice.

For our complete warranty policy, please click here.

EVEN MORE COOL ITEMS

TECH SPECS

Material 6061 Aluminum

Core Height 2.76"

Rows 10

Cooler Construction Stacked-plate

Note Recommended torque specification for all straight fittings and banjo bolts: 15-25 ft/lbs (operating range). Do not exceed the maximum torque rating of 35 ft/lbs.

The installation of this kit requires cutting the plastic undertray. OEM part number for plastic undertray is NA01-56-111F.

During our testing, we had no issues with oil cooler damage, but if concerned, we recommend purchasing window screen or chicken wire to provide additional protection to the oil cooler core.

Core Thickness 1.97"

Core Length 11"

Fitting Size -10AN

Engine Codes 1.8L BP

Chassis Codes NB

Install Torque Specs Recommended torque specification for all straight fittings and banjo bolts: 15-25 ft/lbs (operating range). Do not exceed the maximum torque rating of 35 ft/lbs.

Caution It is the installer's responsibility to check all thermostat plugs, NPT plugs, line fittings, and other connections to assure they are fully tightened before operating the vehicle. Mishimoto recommends that you check all connections at regular intervals, especially during the first few miles after installation. For additional technical information, click here to contact us.

Increase In Oil Capacity 0.5 qt

Temp Difference 10°F

Purchase Includes (2) Application Specific Mounting Brackets
(2) Application Specific Oil Cooler Ducts
(1) 10-Row Oil Cooler (Silver or Black)
(1) 1ft Stainless Steel Braided Hose w/ 120 Degree -10AN Fittings
(1) 1ft 9.5in Stainless Steel Braided Hose w/ 90 Degree and 120 Degree -10AN Fittings
(1) M20 Thermostatic Sandwich Plate
(1) M20 Stainless Steel Sandwich Plate Adapter
(2) M20 x -10AN Straight Fittings
(1) Large O-ring
(1) Mounting Hardware Set
Mishimoto Lifetime Warranty

Engineering Blog

Mazda Miata NB Oil Cooler R&D, Part 4: On-Road Testing

Mazda Miata NB Oil Cooler R&D, Part 4: On-Road Testing

Mishimoto Automotive

December 03, 2015

Interested in picking up our NB Miata oil cooler kit? Check out our discounted pre-sale linked below. Mishimoto 1999-2005 Mazda Miata Oil Cooler Kit Pre-Sale! Our idle warmup provided a nice baseline test to evaluate the benefit of the stock liquid-to-liquid oil cooler. From what we saw in the conditions of our first test, warmup … Continue reading Mazda Miata NB Oil Cooler R&D, Part 4: On-Road Testing →

Read More 

Mazda Miata (NB) Oil Cooler R&D, Part 3: Oil Warm-Up Testing

Mazda Miata (NB) Oil Cooler R&D, Part 3: Oil Warm-Up Testing

Mishimoto Automotive

September 22, 2015

Interested in picking up our NB Miata oil cooler kit? Check out our discounted pre-sale linked below. Mishimoto 1999-2005 Mazda Miata Oil Cooler Kit Pre-Sale! During the previous articles we mentioned that we would be conducting experiments for the stock oil cooler/warmer. Myths and claims exist regarding its impact on the heating of engine oil … Continue reading Mazda Miata (NB) Oil Cooler R&D, Part 3: Oil Warm-Up Testing →

Read More 

Mazda Miata (NB) Oil Cooler R&D, Part 2: Oil Cooler Shroud and Duct Development

Mazda Miata (NB) Oil Cooler R&D, Part 2: Oil Cooler Shroud and Duct Development

Mishimoto Automotive

September 08, 2015

Interested in picking up our NB Miata oil cooler kit? Check out our discounted pre-sale linked below. Mishimoto 1999-2005 Mazda Miata Oil Cooler Kit Pre-Sale! In our last segment, we outlined the goals of the project, and we started fabricating mounting brackets to position our heat exchanger under the front of the Miata NB (second … Continue reading Mazda Miata (NB) Oil Cooler R&D, Part 2: Oil Cooler Shroud and Duct Development →

Read More 

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