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Champion Copper Plus Spark Plug RDZ4H - 979
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Champion Copper Plus Spark Plug RDZ4H - 979

CHAMPION
ELE2066
In stock
$7.96 $6.99
Description The Champion Copper Plus Spark Plug RDZ4H is a dependable OE-type replacement spark plug designed...
$6.99
Champion Copper Plus Spark Plug RDZ4H - 979
Description

Description

The Champion Copper Plus Spark Plug RDZ4H is a dependable OE-type replacement spark plug designed for reliable ignition performance, accurate heat control, and long service life in small engine outdoor power equipment. Built with Champion’s proven Copper Plus design, this plug helps support dependable starts, resist fouling, and maintain consistent wear in demanding residential and commercial yard tool applications.

Its copper core center electrode helps provide improved conductivity and accurate heat range control for longer life, while the tapered seat and J-gap design support OE-style fit and reliable combustion performance. Built to ISO and SAE standards, the RDZ4H is a strong replacement choice for compatible Craftsman, Cub Cadet, and Troy-Bilt equipment.

Features

  • Part number: 979
  • Plug type: RDZ4H
  • OE-type replacement spark plug
  • Champion Copper Plus design for dependable performance and durability
  • Helps resist fouling for reliable operation
  • Copper core center electrode allows accurate heat range control for longer life
  • Superior corrosion resistance
  • Built to ISO and SAE standards for proven performance
  • Center electrode tip material: Nickel
  • Ground electrode tip material: Nickel
  • Ground electrode core material: Nickel
  • Ground electrode material: Nickel Copper Alloy
  • Ground electrode tip design: J Gap
  • Ground electrode quantity: 1
  • Gap style: J Gap
  • Pre-gap size: 0.025 in / 0.64 mm
  • Hex size: 0.625 in / 15.880 mm
  • Insulator height: 0.03 in
  • Manufacturer heat range: 4
  • Seat type: Tapered
  • Reach: 0.5 in
  • Thread diameter: 10.000 mm / 0.394 in
  • Resistor type: Yes
  • Washer included: No
  • Classification: Champion Copper Plus Small Engine
  • Grade type: Standard Replacement
  • Electrical terminal type: Non-Removable Nut
  • Hex type: Hex
  • Center electrode design: Standard
  • Indexed: No
  • Core nose length: 0.320 in / 8.1 mm
  • Center electrode diameter: 0.052 in
  • Installed height: 1.45 in
  • Insulator projection: 0.03 in
  • Taper diameter: 0.18 in
  • Subject to Prop 65: No

Equipment Fitment

Cub Cadet

  • BC490
  • BC509
  • BV428
  • CC148
  • CC148
  • CC310
  • CC4175
  • CC4BP 41AR4BPG912
  • CC5090
  • GC145
  • HB227 41AS2SCG912
  • HB425 41AS4SCG912
  • SS418
  • SS470
  • ST425 41AD425G950
  • ST426C 41AD4C6C912
  • ST426S 41AD4S6C912
  • ST428
  • ST432 41AD432G950
  • ST226 41AD226G950

Craftsman

  • 316.292650
  • 316.292710
  • 316.292711
  • 316.299370
  • 316.299371
  • 316.299372
  • 316.711970 Weedwacker
  • 316.731701
  • 316.731702
  • 316.731931
  • 316.731932
  • 316.731970 Weedwacker
  • 316.731971
  • 316.731972
  • 316.74093 Series*
  • 316.74097 Series*
  • 316.772370
  • 316.772380
  • 316.773800
  • 316.791210
  • 316.791211 Weedwacker
  • 316.791700 Weedwacker
  • 316.791840 Weedwacker
  • 316.791841
  • 316.79193.1
  • 316.791932 Weedwacker
  • 316.791960
  • 316.791961
  • 316.792020
  • 316.792021
  • 316.794010
  • 316.794011
  • 316.794610
  • 316.794611
  • 316.794710
  • 316.794711
  • 316.794790
  • 316.794791
  • 316.794802
  • 316.794830
  • 316.794831
  • C459.51214 Weedwacker
  • CMXGTAMD30SA WS405
  • CMXGTAMDAXSC WS410
  • CMXGVAMKC29C

Troy-Bilt

  • 25A-304-766
  • 41AD304S766
  • BCR4
  • TBC304
  • TBE304
  • TB4BPEC
  • TB4HBEC
  • TB144
  • TB146EC
  • TB146EC
  • TB26CO
  • TB26TB
  • TB304BC
  • TB304CEC
  • TB304H
  • TB304S
  • TB4000
  • TB415CS
  • TB425CS
  • TB425XP
  • TB465SS
  • TB475SS
  • TB490BC
  • TB514CS
  • TB514ES
  • TB515
  • TB515EC
  • TB516EC
  • TB525CS
  • TB525EC
  • TB525ET
  • TB539E
  • TB575EC
  • TB575SS
  • TB590BC
  • TB590EC
  • TB6040
  • TB6040XP
  • TB6042XP
  • TB6044XP
  • TB625EC
  • TB635EC
  • TB675SEC
  • TB685EC
  • TBP3160
  • TBP6040
  • TBP6160
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Returns

Return Window
You have 30 days from the date of delivery to request a return.
After 30 days, we are unable to accept returns, exchanges, or refund requests.

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Certain products may not be eligible for return (e.g., special-order items, customized products, or perishable goods).
Items that have been altered, installed, or modified cannot be returned.

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Customers are responsible for return shipping costs unless the item was defective or incorrect.

Refunds
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Please allow 5–10 business days for the refund to appear on your account.
In some cases, a restocking fee may apply (if applicable, this will be disclosed during your return authorization).

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