Alternator FP34-18-300 12V 80A 4PK Mazda 323 626

Product Overview

The FP34-18-300 is a brand-new generator alternator delivering 12V output at 80A with a 4PK pulley, engineered for Mazda 323 and Mazda 626 BJ 1.8 applications. This unit, cross-numbered as 13719, MZ599-18-300 and Z599-18-300A, matches the original charging-system specification for the Mazda BJ platform.

This generator alternator is stocked in-house with a 1-year warranty and 10-day dispatch lead-time. The factory-correct 12V 80A rating ensures reliable charging performance for Mazda 323 and Mazda 626 vehicles.

Key physical specs: net weight 5.15 kg, gross weight 5.4 kg, overall dimensions 240 x 180 x 170 mm, supplied inside neutral kraft inner carton.

The Mazda 323 626 Charging Platform

Mazda 323 and Mazda 626 BJ 1.8 models use a 12V charging system with factory-spec generator alternators. The alternator numbering spans the FP34 series (FP34-18-300, FP34-18-300C, FP34-18-300R00), the MZ599 / Z599 / Z5A1 / Z1 series (MZ599-18-300, MZ599-18-300A, Z599-18-300A, Z599-18-300C, Z5A1-18-300, Z1-18-300), the 137 series (13719, 13719N, 137-19N, 13718N), the A2TB / A002TB series (A2TB0091, A2TB0091B, A2TB0191A, A2TB0191B, A2TB2391, A002TB0091), the 210 series (210-4137, 2104163) and the numbers 12070 and A8436, all referring to the same charging-system family.

It is critical to verify the rated output and pulley configuration on your old alternator: this unit is rated at 12V 80A with a 4PK pulley. Alternators with a different output, pulley configuration or mounting pattern are not interchangeable with this unit. The 4PK pulley is a key identification point for the Mazda 80A unit, so count the pulley grooves on your old alternator carefully.

Confirm the mounting flange pattern, terminal positions and bolt spacing against your original alternator before ordering. Always cross-check the OE numbers stamped on your old unit, including the FP34-18-300 family, before placing an order.

Technical Specifications

Compatibility and Cross Reference

According to the original product page, this alternator is listed for the Mazda 323 and Mazda 626 with the BJ 1.8 engine. The original page does not publish a detailed fitment table, so do not rely on the brand name alone for fitment validation; always compare the original part number, mounting holes, pulley configuration and connector configuration before ordering.

Multiple Mazda OE and aftermarket numbers appear across production batches and regional market specifications for this same alternator family. If your original unit bears one of the listed cross-reference numbers, FP34-18-300 serves as a direct drop-in replacement.

What to Look for in a Replacement

Follow these five verification steps before placing your order to avoid wrong-part returns:

• 1. Check the voltage and output rating on your old alternator: confirm it is rated for 12V 80A. Other ratings are not interchangeable.

• 2. Check the pulley configuration: this unit uses a 4PK pulley. Alternators with a different pulley groove count, such as the common 6PK, are incompatible.

• 3. Confirm the platform is a Mazda 323 or Mazda 626 with a BJ 1.8 engine. Other platforms may use different alternator assemblies.

• 4. Compare the mounting holes, flange pattern and connector configuration with your original alternator, and match OE numbers including the FP34-18-300 family.

• 5. Weight cross-check: genuine matching unit weighs approximately 5.15 kg net; significant weight difference indicates wrong assembly.

Application Scenarios

• Auto repair shops servicing Mazda 323 and Mazda 626 models with failed charging systems.

• Auto parts retailers and distributors stocking Mazda alternators for the Japanese vehicle aftermarket.

• Car owners and DIY enthusiasts replacing worn alternators with an original-spec new unit.

• Used car dealers refurbishing pre-owned Mazda vehicles for resale.

• Exporters supplying Mazda alternators to global markets.

FAQ

Q: Which vehicles does this alternator fit?
A: It fits the Mazda 323 and Mazda 626 with the BJ 1.8 engine. Confirm your exact year, engine and OE number before ordering, and check that your old alternator is a 12V 80A 4PK unit.

Q: My old alternator shows OE number 13719 or MZ599-18-300, will FP34-18-300 work?
A: Yes. These numbers belong to the same alternator family for the Mazda 323 and Mazda 626 platform, differing only by production revision and market specification. It serves as a direct replacement.

Q: My old alternator has a 6PK pulley, will this 4PK unit fit?
A: No. The pulley groove count must match: this unit uses a 4PK pulley, and a 6PK alternator is not interchangeable with it. Confirm the pulley configuration of your old alternator before ordering.

Q: What is the correct charging voltage after installation?
A: A healthy 12V charging system should regulate at approximately 13.5-14.5V at the battery terminals with the engine running. If the voltage is out of range, check the alternator, regulator and wiring before further testing.

Q: Can I fit this alternator onto other vehicle brands?
A: No. Different vehicle families use different alternator mounting patterns, pulley configurations and terminal layouts. Confirm your vehicle model before ordering.

Q: What is your warranty and lead-time?
A: Goods are in stock with a 10-day dispatch lead-time. A 1-year warranty applies from installation date; warranty excludes damage caused by mis-installation, incorrect wiring, water ingress, short circuit or physical damage.

In Practice

For technicians working on Mazda vehicles: Before removing the existing alternator, confirm the engine is off and the battery is disconnected at the negative terminal first, and park the vehicle on a flat surface with the parking brake engaged. Remove the battery cable from the B+ terminal of the alternator, noting the correct orientation of each connection, and label or photograph the wiring before disconnecting.

Release the belt tensioner, remove the 4PK drive belt from the pulley and remove the mounting bolts supporting the alternator. Compare the new alternator against the old unit: verify mounting flange, bolt spacing, the 4PK pulley and connector configuration. Clean the mounting surface, position the new alternator, and tighten mounting bolts in stages to factory torque. Reinstall the drive belt, ensuring correct belt routing and tension, then reconnect the wiring and battery cable, ensuring terminals are clean and tight.

After installation, reconnect the battery and start the engine. Check that the alternator charges correctly: battery voltage should rise to approximately 13.5-14.5V with the engine running, the charge warning light should go out, and the alternator should run quietly without bearing noise or belt slip. If the warning light stays on or voltage is out of range, inspect the wiring, belt tension and alternator output before further testing.

References

Parameters and vehicle applications are compiled based on the original product listing, Mazda OE and aftermarket alternator cross-reference data for the FP34-18-300 family, and general automotive industry standards for alternator installation, verified against actual vehicle installation tests and after-sales maintenance experience.

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