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1999 2000 Mazda Miata MX5 1.8L Engine 6 Speed Manual Transmission JDM BP + Wiring & ECU

Sale price $2,899.99
Regular price
Make

Mazda

Fitment

Mazda Miata MX5 NB

Mileage

55K

Engine Design

1.8L, DOHC

Engine Type

Inline-4

Warranty

30 Days

90 Days Warranty . Compression Tested . Insured Shipping

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+1 909-393-3931

Drivetrain Specifications

  • Engine Family: Mazda B-Series

  • Engine Code: BP-4W (NB1 Generation)

  • Transmission Type: 6-Speed Manual (Close-Ratio Aisin Gearbox)

  • Displacement: 1.8 Liters (1,839 cc)

  • Valvetrain: DOHC 16-Valve with Solid Lifters (Non-VVT)

  • Horsepower Output: Approx. 140–142 hp @ 6,500 RPM

  • Torque Output: Approx. 119 lb-ft @ 5,500 RPM

  • Factory Redline: 7,000 RPM

Vehicle Fitment & Swap Compatibility

This package serves as a factory replacement or highly popular upgrade layout for:

  • Mazda Miata MX-5 (NB Chassis): 1999, 2000 (Direct drop-in replacement or premium 5-speed to 6-speed conversion)

Long Block & Transmission Installation Notes

TECH SUPPORT ADVISORY: Performing a complete 6-speed engine swap requires methodical layout adjustments. Review these professional mechanical guidelines before dropping the assembly in:

  1. JDM Wiring & ECU Notice: The included JDM engine wiring harness and ECU are configured for Japanese right-hand drive (RHD) vehicles. The JDM ECU also lacks North American OBD-II emissions configurations and does not look for an immobilization system. If you need to pass local emissions testing, you MUST reuse your factory USDM engine wiring loom, intake manifold sensors, and USDM factory ECU.

  2. EGR Valve Configurations: Japanese Domestic Market BP-4W engines often do not utilize an External Exhaust Gas Recirculation (EGR) valve or use a different configuration than North American models. Swap your original USDM intake manifold plenum and EGR hardware to avoid throwing dashboard check engine codes.

  3. Upgrade Clutch Consumables: While the 1.8L block and 6-speed manual transmission casing are separated on the garage floor, put in a brand-new high-performance clutch kit, heavy-duty pressure plate, throw-out bearing, and pilot bearing. Always resurface or replace the flywheel.

  4. Mandatory Engine Stand Maintenance: Take advantage of complete engine accessibility and install a fresh Water Pump, Thermostat, Front Crankshaft Seal, Rear Main Seal, and Valve Cover Gasket prior to final vehicle assembly.

  5. Fluid & Timing Protocols: Refill the block using a premium 10W-30 or 5W-30 synthetic motor oil. Service the 6-speed manual transmission gearbox using specialized performance gear fluid like Redline MT-90 or Amsoil MTF to ensure slick, grind-free shifting at high RPMs.

  6. Compression Tested at 180PSi

All Star JDM offers limited warranty coverage on eligible used engines and transmissions. Used replacement engines and transmissions are generally covered for 90 days, while used performance engines and performance transmissions are generally covered for 30 days unless otherwise stated on the sales receipt. Rotary engines and parts are sold as-is with no warranty coverage.

The warranty covers eligible internal engine components, engine block, cylinder walls, and cylinder head against cracks or defects. External parts, electronics, accessories, improper installation, negligence, and installation-related failures are not covered.

Warranty claims require a written description, pictures, videos, and a valid report from a certified mechanic. Returned items must be in the same condition as sold, fully assembled, and include all original parts/components included in the sale.

For full details, please review our complete warranty policy.

JDM All Star offers a 30-day return policy, meaning customers have 30 days after receiving their item to request a return. Returned or refused orders may be subject to a 25% restocking fee, and original shipping charges plus return shipping costs are the customer’s responsibility.

Engines, transmissions, and automotive parts must be returned in the same condition as delivered. Returns will not be accepted if the item has been disassembled, modified, or parted out.

JDM All Star is not responsible for shipping damage, installation costs, labor, transport, or other related expenses. For return requests or questions, customers can contact sales@allstarjdm.com.

For full details, please review our complete refund policy.

All Star JDM offers specialized shipping with surcharges for services like liftgate delivery. They promise same-day shipping for orders before 1 PM PST, with next-day dispatch for later orders. Shipping is within the 48 contiguous states, with special arrangements for other US territories. Customers receive tracking numbers and are responsible for return shipping costs. Queries can be directed to their customer service. Shipping policy acceptance is required.

All Star JDM's terms require users to comply with conditions when using their website and services. It includes accepting terms upon access, being of legal age, and the right to refuse service. Information may not always be accurate, and service and prices can change without notice. They offer online-exclusive products, reserve order refusal rights, and may use third-party tools and materials. Users' feedback may be used freely, and personal information is protected under their Privacy Policy.

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Enjoy fast and free local delivery within 30 Miles getting your parts to you quickly and securely.

Installation Available

Need help with installation? We offer expert installation services to ensure your parts are fitted correctly and efficiently.

Warranty

Warranty Purchase with confidence—our parts come with a 90-day warranty non performance & 30 day on performance to guarantee your satisfaction and peace of mind.

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