NGK Spark Plug BPR6EFS 8-Pack — 18mm Reach, 0.8mm Gap, 5KΩ Resistor for Cars & Small Engines

NGK BPR6EFS 3623 is a genuine pack of eight standard NGK spark plugs designed to replace worn or faulty plugs across a wide range of cars, small engines and marine inboards.

These NGK BPR6EFS plugs come as an authentic 8-pack with original packaging and hardware, built to the manufacturer's specification for fit and function. They are a standard replacement option for many Ford models (Escort, Fiesta, Granada, Orion, Scorpio) and fit various other applications such as boat inboard motors, mowers and small engines. Key factory specs include an 18 mm reach, a spark gap set to 0.8 mm, and an internal resistor value of 5 KΩ to reduce radio interference.

Will these plugs fit my vehicle or equipment?

Compatibility depends on your engine’s thread size, reach and heat range. The BPR6EFS is a commonly used NGK part for older Ford models and a variety of small engines; always cross-reference your vehicle’s service manual or a parts lookup tool before purchasing.

• Part number: NGK BPR6EFS (3623)
• Common fits: Escort, Fiesta, Granada, Orion, Scorpio and some inboards and mowers
• Confirm fit via OEM lookup or Amazon Confirmed Fit

How do these plugs perform and what are the key specifications?

These are standard nickel-electrode plugs engineered for reliable ignition and EMI suppression. They include a 5 KΩ internal resistor and are pre-gapped to 0.8 mm, making them ready for many replacement jobs straight from the box.

• Thread reach: 18 mm for proper seating in compatible engines
• Spark gap: 0.8 mm (pre-set, can be adjusted if required)
• Resistor: 5 KΩ to minimize radio and ignition interference

What installation details and torque settings should I follow?

Use the correct torque to ensure a proper heat transfer and seal without damaging the plug or thread. Torque differs by seat material: cast-iron seats require higher torque, while aluminum heads need gentler tightening and a torque-angle approach if specified.

• Cast iron head torque: 10.8–18 lb·ft (approximately 14.6–24.4 N·m)
• Aluminum head torque: 7.2–14.5 lb·ft (approximately 9.8–19.7 N·m)
• Always gap-check to 0.8 mm and use anti-seize only if recommended by the vehicle maker

How do I know when to replace spark plugs and what does this 8-pack include?

Replace plugs according to your engine manufacturer’s service interval or earlier if you notice hard starts, misfire or poor fuel economy. This NGK kit supplies eight identical plugs in original packaging to service multiple cylinders or keep spares on hand.

• Contents: eight NGK BPR6EFS (3623) spark plugs, original packaging and any included hardware
• Use-case: full engine service for 4- and 6-cylinder engines or multiple small engines
• Pre-packaged and ready to install after a quick gap check

Who this is for: this 8-pack is aimed at DIY mechanics, professional technicians and fleet/service shops that need genuine NGK replacement plugs for older Ford models, marine inboards, lawn equipment and other compatible engines. It’s also useful for anyone who prefers buying genuine OEM-standard parts in bulk to complete a full tune-up or to keep a supply of trusted spares.