Champion 549 Spark Plug

Description

The Champion 549 Spark Plug is engineered to provide dependable ignition performance in agricultural tractors, industrial equipment, and utility engines operating in demanding environments. Backed by Champion’s global engineering from Federal-Mogul, this spark plug is designed to perform reliably in high-compression engines and heavy-duty service conditions.

Manufactured with durable nickel electrode materials and precision construction, the Champion 549 delivers consistent spark performance and long service life. The flat seat configuration, removable terminal nut, and factory pre-gap allow for straightforward installation across a wide range of legacy agricultural and industrial engines.

Designed to withstand high temperatures and high-load operating conditions, the Champion 549 helps maintain reliable starting and stable combustion in equipment where durability and consistent engine performance are critical.

Features

• Designed for high-compression and aggressive operating environments

• Manufactured for long-lasting durability

• Backed by global engineering from Federal-Mogul

• Standard replacement spark plug for agricultural and industrial engines

• Nickel center electrode for dependable ignition performance

• Nickel copper alloy ground electrode for durability

• Pre-gapped at 0.025 in (0.65 mm) for installation convenience

• Flat seat design for secure engine fitment

• Non-resistor construction for traditional ignition systems

• Removable terminal nut for flexible ignition wire connections

Specifications

• Part Description: Spark Plug

• Center Electrode Tip Material: Nickel

• Center Electrode Design: Standard

• Ground Electrode Quantity: 1

• Ground Electrode Tip Material: Nickel

• Ground Electrode Core Material: Nickel

• Pre-Gap Size: 0.025 in / 0.65 mm

• Hex Size: 0.875 in / 22.230 mm

• Manufacturer Heat Range: 18

• Seat Type: Flat

• Reach: 0.5 in

• Thread Diameter: 0.709 in / 18.000 mm

• Resistor Type: No

• Electrical Terminal Type: Removable Nut

• Hex Type: Hex

• Insulator Height: 0.06 in

• Classification: Champion Agricultural Plugs

• Grade Type: Standard Replacement

• Subject to Prop 65: No

Fitment

Compatible with a variety of International Harvester tractors and agricultural equipment, including:

• International A

• International AV

• International AV-1

• International B

• International BN

• International C

• International Cub

• International Cub Lo-Boy

• International H

• International M

• International M-TA

• International M-TAV

• International O-4

• International O-6

• International OS-4

• International OS-6

• International T6

• International W4

• International W6

• International W6TA

Additional International models:

• International 100

• International 130

• International 140

• International 140HC

• International 154

• International 184

• International 185

• International 200

• International 230

• International 240

• International 300

• International 330

• International 340

• International 350

• International 400

• International 404

• International 424

• International 444

• International 450

• International 453

• International 454

• International 460

• International 464

• International 504

• International 544

• International 574

• International 674

Industrial and construction equipment applications:

• Bucyrus-Erie 22T, 22W, 27T

• Thew construction equipment models including MC504W and additional models

• Waldon 5000

Industrial engine applications:

• Gardner-Denver UC-135B engines and additional compatible models.

(Always verify engine specifications and manufacturer recommendations to confirm correct spark plug fitment before installation.)