Ignition Coil + Spark Plugs for Mazda B2300 (1994-1997) 2.3L
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Direct-Fit Ignition Coil and Spark Plug Kit for 1994-1997 Mazda B-Series,B2300 2.3L (Lima OHC / UN Platform)
What it Does: The Direct-Fit Ignition Coil and Spark Plug Kit replaces worn factory coil packs and degraded plugs on the 1994-1997 Mazda B-Series,B2300 to eliminate secondary ignition breakdown, restore throttle response, and eliminate misfires under heavy load.
The Stock Mazda B-Series,B2300 Secondary Ignition Breakdown
The factory 8-plug distributorless ignition system on the Ford Lima 2.3L engine relies on a waste-spark configuration where two coil packs fire eight spark plugs simultaneously across reversed polarities. Over years of thermal cycling, the OEM coil casings develop microscopic epoxy fissures and dielectric breakdown in the primary and secondary copper windings. This internal winding breakdown causes severe voltage drop, carbon tracking, and intermittent cylinder misfires—especially when pulling a load or climbing under low-RPM high-manifold pressure. Compounding this, aged factory plugs suffer from widened electrode gaps due to dual-strike erosion, forcing the degrading coils to demand excessive firing voltage that triggers ignition blow-out and raw fuel dumping into the exhaust stream.
The Engineering Solution
This comprehensive tune-up kit replaces all primary wear points in one matched package. The two direct-fit ignition coils are built with high-dielectric PBT thermoplastic housings and vacuum-poured epoxy insulation to withstand continuous underhood heat soak without dielectric punch-through. Premium magnetic copper wire windings provide stable primary-to-secondary turns ratios to ensure peak secondary discharge exceeding 35,000 volts. Paired with eight precision-gapped, corrosion-plated spark plugs featuring high-alumina ceramic ribs, this kit restores consistent flame-front kernel development across both the intake-side and exhaust-side combustion zones, stabilizing engine idle and eliminating unburned hydrocarbon emissions.
Technical Specifications
| Fitment | 1994-1997 Mazda B-Series,B2300 |
|---|---|
| Engine / Chassis | 2.3L Lima OHC / UN Platform |
| Stock Output | 112 hp / 135 lb-ft |
| Replaces OEM Part # | FD487, FD490, F37Z12029A, 1E05-18-100, F5OU-12029-AA |
Compatibility
- 1994 Mazda B2300 Base / SE 2.3L L4
- 1995 Mazda B2300 Base / SE 2.3L L4
- 1996 Mazda B2300 Base / SE 2.3L L4
- 1997 Mazda B2300 Base / SE 2.3L L4
Frequently Asked Questions
Does this fit the UN Platform B-Series,B2300?
Yes, this is a direct fit for the 1994-1997 Mazda B-Series,B2300 equipped with the 2.3L Lima OHC engine.
Why does this 4-cylinder engine require eight spark plugs and two coils?
The 2.3L Lima engine utilizes a dual-plug head design with two spark plugs per cylinder fired in waste-spark sequence to ensure complete fuel burn, curb tailpipe emissions, and suppress combustion knock.
The Mazda Workhorse Standard
Engineered for real-world utility, your B2300 relies on low-end torque and bulletproof combustion efficiency to haul payload and tackle rugged job sites without missing a beat.
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Warranty
Warranty
All products are backed by our Limited Lifetime Warranty. We stand by our quality. [See terms]

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$137.95