Boundary Stage 2 High Flow Oil Pump for Mazda MX-5 NA NB

£469.08 inc. VAT

Keep your engine alive, even spinning to the moon

11 in stock

Genuine Oil Pump Bolt Set for Mazda MX-5 NA NB

Genuine Crankshaft Oil Seal Front for Mazda MX-5 NA NB

The Boundary Stage 2 oil pump is a must-have upgrade for MX-5s looking to run either a higher rev limiter or higher power. A good rule of thumb is anything over 300 horsepower or running over 7,000 RPM be installing billet oil pump gears. Shock loading caused by boost cut or RPM limit can shatter the OEM sintered oil pump gears, resulting in complete engine failure.

Consider it insurance if you’ve just built a forged engine with new pistons, rods, and bearings?you wouldn’t want all that to be ruined by an oil pump failure. The sintered gears inside of a stock oil pump assembly are only rated to about 6KSI of stress before shattering. These gears provide a serious structural upgrade to 90Ksi steel.

Stage 2 increases oil flow by machining a deeper pocket and installing larger gears into the oil pump. As a result, the oil pump gears are stronger and mid-range oil pressure is increased. The increased oil flow means this pump can be used with VVT engines.

All Boundary billet oil pumps start with a brand new pump which undergoes the following processes

  • The pump is completely taken apart, and all parts undergo ultrasonic cleaning, air blast, and hand inspection
  • The pump is hand de-burred
  • A larger, industry-leading mirror-finished stage 2 gear set is used
  • Stainless Torx heads replace the stock fasteners
  • All fasteners are torqued to spec
  • Loctite is applied to fasteners to prevent back-out or loosening
  • Anaerobic sealant is applied to critical areas to boost pump-up speed and reduce aeration.
  • Assembly lubricant is applied to all critical surfaces to get oil flowing fast on startup
  • Parts are blueprinted and issued with a specification sheet

Stage 2 Pumps come pre-shimmed by the factory to 72psi. If you require a different relief pressure, remove the existing shim washer and replace with the relevant unit from the shim pack.

This is an assembled oil pump with billet gears to suit the 1990-2005 engines, including the 2001-2005 1.8 VVT engine. A front main seal is not included.

 

 

Additional information

Shipping Weight 1.4 kg
Shipping Dimensions 27 × 16 × 9 cm
Brand

Boundary Engineering

Model

Mk1 (89-98), Mk2 (98-05)

Warranty information

Warranties cover defects in materials and workmanship only. Warranty is for replacement of a similar product, repair of the original product or refund of the purchase value only and excludes all labour and incurred charges including towing, fitting, inconvenience, and purchases of other manufacturer's products. The warranty is good for the period stated in the additional info tab from the date of purchase. Mileage warranties are for road use only and proof of mileage is required. Products must be installed by an independent experienced professional mechanic and the suspected defect must be present at the outset. The warranty does not cover damage caused by incorrect installation, failure to comply with the maintenance requirements of the vehicle, processing or otherwise changing the product, ordinary wear and tear, or any other external influences. Warranties are invalid if the product is used for racing, rallying, drifting, track days or any other form of motorsport or competition. Please refer to the manufacturer's own warranty documentation for more information.

Making a warranty claim

Proof of purchase receipt showing the date of purchase, proof of mileage at installation, proof of current mileage and invoice of the work undertaken by an independent experienced professional mechanic must be supplied along with the returned products for a warranty claim to be considered. If your vehicle needs to be used whilst your warranty claim is considered replacement parts from the same manufacturer should be purchased through BOFI Racing. In the event of a successful warranty claim, we will refund the card that was originally used to purchase the replacement parts, in full or in part depending on the nature of the claim. BOFI Racing reserves the right to make full or partial compensation at its sole discretion depending on the condition and mileage use of the returned suspect parts. For example, if you have used the part for several thousand miles before a defect is noticed, only partial compensation may be offered.