SKU: 20198533254

ESR Fuel Pressure Regulator (1999-2005)

Sale price$195.75 Regular price$217.50
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Description

ESR Fuel Pressure Regulator (1999-2005)This regulator is engineered to work the same way Mazda designed the original system to work. With one regulator, with a return back to the tank. This ensures proper regulation of fuel pressure pulse to the fuel injectors. Other products on the market piggy back a second regulator that does not return excess pressure to the tank but bleeds it off with the injectors opening and closing. This can cause an uneven pressure and pulse that the injectors can

This regulator is engineered to work the same way Mazda designed the original system to work. With one regulator, with a return back to the tank. This ensures proper regulation of fuel pressure/pulse to the fuel injectors. Other products on the market piggy back a second regulator that does not return excess pressure to the tank but bleeds it off with the injectors opening and closing. This can cause an uneven pressure and pulse that the injectors can see, which can lead to fluctuating A/F ratios. In addition, regulating the fuel pressure by constricting the orifice size is tuning on the razors edge. You are limiting both the volume as well as the pressure of fuel supplied to the engine. This system does not limit the volume of the fuel, just the pressure it is delivered at. A large fluctuation of temperature when using "other products on the market" can lead to an extreme lean condition which can have catastrophic results, usually ending with an engine failure.

This kit is made to the highest standards using AN 6 and OE quick disconnect hardware. No hose clamps are used in this system at all. There is also no cutting or modifying of the OE hoses. All hoses are professionally made custom for the application and crimped to the fittings. The regulator is made by the leading manufacturer of fuel systems. This kit comprises all the best parts possible. Don't be fooled by cheaper inferior products on the market.

Our regulator is mounted in the trunk and not in the engine compartment. By mounting the kit in the trunk we keep it away from the heat of the engine compartment which can effect the temperature.

Adjustment is simple with one screw and the kit comes with a liquid filled gauge to monitor your pressure. There is also an additional un-used port on the regulator which can be used to add the optional fuel test port kit fitting.

Monitoring and tuning your AF ratio can help get the most performance out of your engine. This is the kit to have.

This kit comes complete with the following items:
  • Adjustable Fuel Pressure Regulator
  • Professionally made custom fuel lines (2)
  • Instructions
  • Liquid Filled Gauge
  • Replacement Fuel Line

Vehicle Applications:

  • 1999-2005 Mazda Miata 1.8L NB1 & NB2
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 20198533254

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Free Bird
Lake Worth, US
★★★★★ 5
Very comfortable chair!
Color: Black
This office chair is a great addition to my bedroom. It offers really nice comfort because of its thick and cushioned back which helps make long hours at a desk much more enjoyable. The adjustable height is really nice as it makes this chair extremely versatile. The armrests are sturdy and positioned well for typing or resting your arms. They also move back if you don’t like them.  The assembly was straightforward and didn’t take long as the instructions were clear and easy to follow. The wheels roll really nice and don’t get stuck. This chair is really comfortable and nice. 
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Reviewed in the United States on March 3, 2026
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Jerry
Boise, US
★★★★★ 5
Very Comfortable
Color: Black, Color: Black
Very easy to assemble , only 7 steps, and the tools are included.Great quality , material quality is high.The cushion supports my lower back. Very comfortable.price is reasonable.
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Reviewed in the United States on May 2, 2026
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Jc
Pawtucket, US
★★★★★ 5
great
Color: Black
Excellent chair for shorter users! The seat height and lumbar support fit perfectly, providing great comfort even after long hours of work. The PU leather looks sleek and is easy to clean. The wheels roll smoothly, and the 360° swivel works perfectly. Assembly was simple and quick. Great quality and amazing value for the price. Highly recommended!
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Reviewed in the United States on March 2, 2026
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yanwu zhang
Grantham, US
★★★★★ 5
Very sturdy
Color: Black, Color: Black
Good comfort level ✔ The seat cushion is soft but doesn't sag, and the armrests also provide some cushioning. Easy to clean ✔ The leather surface can be easily wiped clean with a damp cloth, making it ideal for use on tables with drinks or snacks. Simple installation, clear instructions "The cushions on the chair back and armrests are soft enough, not too hard. It offers good value for money; the price is reasonable, but the seating comfort is better than I expected. "Suitable for daily office work or study." The seat cushion is very comfortable, and the back support is excellent. Adjustable height, smooth The chair is sturdy No shaking
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Reviewed in the United States on March 4, 2026
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Philip Tam
Chelsea, US
★★★★★ 5
Comfortable chair
Color: Black, Color: Black
I wanted an all black out chair to match my cabinets and this chair fits my needs. It was easy to install took me about 20mins or so. Quality is great, the base is made out of metal hence very solid, it came with the polyurethane wheels, rolling on the hardwood floor is very smooth. Seat and arm rest have thick foam paddings makes it very comfortable to seat on and lean back. Adjustable recline tension and height adjustment. Great chair.
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Reviewed in the United States on April 25, 2026

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