Description
The Mishimoto MMOC-MIA-99TBK is a direct-fit, thermostatically controlled oil cooler kit engineered specifically for the 1999-2005 Mazda Miata NB and its 1.8L BP engine. In Mishimoto’s own testing, this kit dropped oil temperatures by 10°F (5.6°C) during a 65 mph highway cruise, and its billet aluminum thermostatic oil sandwich plate keeps oil from running too cold when the weather turns. This is no generic bolt-on: the mounting bracket itself is designed to serve as ducting, channeling air straight to the cooler core while tucking it away from the front bumper to leave room for an intercooler.
Whether you’re chasing lap times or building out a forced-induction NB, this Mishimoto oil cooler kit is built to handle the extra heat load that comes with spirited driving. As part of Mishimoto’s Cooling lineup, the kit pairs a 10-row bar-and-plate core with pre-made stainless steel braided lines and durable -10AN fittings, so there’s no line fabrication required at install. The billet aluminum thermostatic oil sandwich plate lets oil reach optimum operating temperature before it ever reaches the cooler, which matters just as much on a cold morning drive as it does after a hard session at the track, since overcooled oil can be just as harmful as overheated oil. Mishimoto engineered this oil cooler kit with minimal pressure drop, and it’s built to work with most aftermarket turbo kits, since turbocharging adds its own heat load to engine oil. The kit also increases total oil capacity by 0.5 qt, giving your Miata a bit more thermal buffer. This particular kit ships in a black, anodized finish and is backed by the Mishimoto Lifetime Warranty.
Vehicle Applications
This Mishimoto oil cooler kit is a direct fit for the Mazda Miata NB chassis fitted with the 1.8L BP engine, covering the 1999-2005 Miata Base and the 2000-2005 Miata LS.
Features
- Direct fit for the 1999-2005 Mazda Miata NB (Base) and 2000-2005 Miata LS, 1.8L BP
- Reduces oil temperatures by 10°F (5.6°C) as tested during a 65 mph highway cruise
- Mounting bracket doubles as ducting to channel air to the cooler while positioning it away from the front bumper for intercooler clearance
- 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 before flowing to the cooler
- Increases oil capacity by 0.5 qt
- 10-row, bar-and-plate cooler core finished in black with an anodized coating
- Backed by the Mishimoto Lifetime Warranty
Specifications
- Part Number: MMOC-MIA-99TBK
- Color: Black
- Finish: Anodized
- Core Type: Bar-and-Plate
- Core Row Quantity: 10-Row
- Core Height: 2.76 in
- Core Thickness: 1.97 in
- Core Width: 11 in
- Core Color: Black
- Grade Type: Performance
- Inlet Fitting Type: AN Flare, Male
- Outlet Fitting Type: AN Flare, Male
- Engine Code: 1.8L BP
- Chassis Code: NB
- Recommended Torque (straight fittings and banjo bolts): 15-25 lb-ft; do not exceed 35 ft-lb maximum
- Includes: application-specific mounting brackets, application-specific oil cooler ducts, 10-row oil cooler, 1ft stainless steel braided hose with 120-degree -10AN fittings, 1ft 9.5in stainless steel braided hose with 90-degree and 120-degree -10AN fittings, M20 thermostatic sandwich plate, M20 stainless steel sandwich plate adapter, M20 x -10AN straight fittings, large O-ring, mounting hardware set, and the Mishimoto Lifetime Warranty
Frequently Asked Questions
Which vehicles does this Mishimoto oil cooler kit fit?
It’s a direct fit for the 1999-2005 Mazda Miata NB Base and 2000-2005 Miata LS, equipped with the 1.8L BP engine.
How much does this kit lower oil temperature?
In testing, it dropped oil temperatures by 10°F (5.6°C) during a 65 mph highway cruise.
Does installation require any modification?
Yes, installation requires cutting the plastic undertray (OEM part number NA01-56-111F).
What torque should be used on the fittings?
The recommended torque for straight fittings and banjo bolts is 15-25 lb-ft, with a maximum rating of 35 ft-lb.
What warranty comes with this kit?
This kit is backed by the Mishimoto Lifetime Warranty.
What’s included in the box?
The kit includes application-specific mounting brackets, application-specific oil cooler ducts, a 10-row oil cooler, pre-made stainless steel braided hoses with -10AN fittings, an M20 thermostatic sandwich plate, an M20 stainless steel sandwich plate adapter, M20 x -10AN straight fittings, a large O-ring, and mounting hardware.
âš WARNING (California Proposition 65): This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
