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NGK 6441 Iridium IX Spark Plug ZFR6FIX-11 Fine Wire Iridium

(Jeep Grand Cherokee 1999-2010, Liberty 2002-12, Commander 2006-10; Honda Civic 2001-05, CR-V 1999-2001, Prelude 1992-2001; Ram 1500 2011-13 + 39 more models)

Manufacturer

Picture for manufacturer NGK Spark Plugs

Part Number

6441
6 reviews
Sale Price

$7.92

In Stock (10+)

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Usually delivered within 2 days

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Product Details

The NGK 6441 Iridium IX spark plug (stock number ZFR6FIX-11) is a performance-grade iridium spark plug. It is designed for modified or high-performance engines, and as an upgrade over OE nickel alloy plugs. The fine wire iridium center electrode gives strong ignitability, quicker throttle response and good anti-fouling performance.

Key Features:

  • Fine wire iridium tip: 0.6 mm iridium center electrode for durability and a consistently stable spark
  • Iridium alloy center electrode: iridium is about six times denser than platinum and has a very high melting point, which suits modern high-efficiency engines
  • Tapered cut ground electrode: reduced-quenching design for improved acceleration, fuel efficiency and durability
  • Solid copper core: 98% pure copper for heat dissipation, conductivity and a wide heat range
  • Trivalent metal plating: resists corrosion and seizing, which makes installation and removal easier
  • Resistor design: helps suppress radio frequency interference

Specifications:

  • NGK stock number: 6441
  • NGK part number: ZFR6FIX-11
  • Thread size: M14 x 1.25
  • Reach: 19 mm (3/4 in)
  • Hex size: 5/8 in (16 mm)
  • Seat type: gasket
  • Heat range: 6
  • Pre-set gap: 0.044 in (1.1 mm)
  • Ground electrode: single, J-gap, taper cut
  • Terminal: non-removable nut
  • Insulator: ceramic

Cross-references: Autolite XP5224; Bosch 9603, 9604, 9664; Champion 9803; DENSO 4701, 5357, 5358, IK16L, IK16TT, IK20L; Mazda 1UNH-18-110; Mitsubishi MZ602069; Nissan BY481-ZFR6F.

NGK is a leading OE spark plug supplier, and the Iridium IX line brings that quality to enthusiasts who want sharper response and long service life. Check the gap against your engine's specification before installing.

Products specifications

Fits

Jeep Grand Cherokee 1999-2010, Liberty 2002-12, Commander 2006-10; Honda Civic 2001-05, CR-V 1999-2001, Prelude 1992-2001; Ram 1500 2011-13, Dakota 2010-12, Ram Pickup 2010-13; Dodge Durango 1998-2009, Ram 2500 1997-2003 + 35 more models

Stock Number

6441

Part Number

ZFR6FIX-11

Electrical Terminal Type

Non-Removable Nut

Ground Electrode Core Material

Nickel

Seat Type

FLAT

Manufacturer Heat Range

6

Ground Electrode Quantity

1

Center Electrode Tip Material

Iridium

Hex Size

5/8

Ground Configuration

Standard

Center Electrode Core Material

Copper

Pre-Gap Size

.044

Reach

.75

Insulator Height

50.50

Thread Diameter

14.00

Resistance

5000

Ground Electrode Tip Design

Taper Cut

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Excellent prices, inventory and fast service. I placed my order on Saturday, Aug 4, it was shipped on Monday, Aug 6, and due to arrive on Friday. I will be a repeat customer with prices and service like this.

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