Home / NGK 4004 Spark Plug BMR4A - 8 Pack
NGK 4004 Spark Plug BMR4A - 8 Pack
$43.77
Free shipping on all orders.
Qty In Stock: 20
The NGK 4004 Spark Plug (BMR4A) is designed for small engine applications, offering reliable ignition, smooth performance, and long service life. Built with a solid copper core and nickel alloy electrode, it ensures efficient heat dissipation and dependable combustion—ideal for chainsaws, trimmers, and other compact outdoor power equipment.
Features & Benefits:
🔧 Copper core improves thermal conductivity and ignition
🔧 Nickel alloy electrode resists fouling and corrosion
🔧 Compact design fits small engine configurations
🔧 Pre-gapped for quick and accurate installation
Specifications:
Brand & Part Number: NGK 4004 (BMR4A)
Material: Nickel with Copper Core
Thread Size: 14mm
Reach: 9.5mm (3/8 in)
Hex Size: 13/16 in (20.8mm)
Heat Range: 4
Seat Type: Gasket
Resistor: No
Gap: 0.7mm (0.028 in)
Choose NGK BMR4A for consistent small engine performance, reliable ignition, and trusted durability—perfect for your outdoor equipment needs!
Shipping Info
Free shipping on every US order. In-stock parts typically ship within 1 business day from Texas.
Returns
30-day returns on unused parts in original packaging. Wrong or defective items are replaced or refunded. See the return policy.
How do I confirm this part fits?
Match the brand and part number to your vehicle, or use the Parts Finder on the homepage. Contact us before ordering if you are unsure.
Are these parts new?
Yes. TXN Supply Co sells new parts from trusted OEM-quality brands — not remanufactured cores.
How fast will my order ship?
In-stock orders ship within 1 business day. Delivery time depends on your ZIP; most US addresses arrive in 2–5 business days.
What is your return policy?
Unused items can be returned within 30 days in original packaging. Customer-initiated returns may include a restocking fee and return shipping.
