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International S120 Starter Bushings

International S120 Starter bushings

Starter bushings for your International S120 start at $1.95, and AutoBuffy stocks 3 options from Standard Ignition. The starter bushing is a small sleeve bearing pressed into the bell housing or rear engine plate that supports the nose of the starter armature shaft. When it wears out, the starter shaft wobbles, causing grinding, slow cranking, and eventual starter failure.

Signs your International S120 needs a new starter bushing

  • Grinding or scraping noise when the key is turned to start — the worn bushing allows the armature shaft to wobble and contact surrounding metal
  • Starter motor spins but cranks the engine slowly or inconsistently, even with a fully charged battery
  • Starter engages but produces a high-pitched whining or squealing sound before the engine fires
  • Visible brass or bronze debris or metallic dust found near the bell housing or starter mounting area
  • Starter works intermittently — sometimes cranks normally, other times grinds or fails to engage cleanly
  • Premature starter motor failure — replacing the starter repeatedly without addressing the bushing leads to the same symptoms returning quickly

Which starter bushing should you buy for your International S120?

Starter bushings differ primarily by material and whether they are sold individually or as part of a rebuild kit. The bushing must match the exact inner diameter of your starter armature shaft and the outer diameter of the bore it presses into, so confirm fitment using your International S120's year and engine before ordering. Material choice affects longevity and how well the bushing tolerates heat and marginal lubrication.

OE-Spec Bronze Bushing
Best for
Most daily drivers seeking a like-for-like replacement
What you get
Sintered bronze construction that is self-lubricating, matches original dimensions, and restores proper shaft support
Heavy-Duty Brass Bushing
Best for
High-mileage vehicles, frequent short-trip driving, or hot climates where heat accelerates wear
What you get
Denser alloy with tighter tolerances and better heat resistance than standard sintered bronze
Starter Rebuild Kit (bushing + brushes + springs)
Best for
Anyone doing a full starter rebuild rather than buying a replacement unit
What you get
All wear items in one package — cost-effective and ensures every small component is renewed at once
OEM-Sourced Bushing
Best for
Owners who want exact factory fit and material specification with no guesswork
What you get
Sourced from or made to the original equipment manufacturer's print; typically higher cost but guaranteed dimensional match

Starter bushings brands we stock for your International S120

Standard Ignition
3 options · from $1.95

Replacing the starter bushing on a International S120

Moderate⏱ 1–2 hoursSocket set and ratchetBushing driver or stepped punch sized to the bushing ODRubber or dead-blow malletNeedle-nose pliersHigh-temperature grease or clean engine oil for installation

The starter must first be unbolted and removed from the International S120 to access the bushing in the bell housing or rear plate. The worn bushing is then driven out using a correctly sized punch, and the new bushing is pressed or driven in squarely until it sits flush. Reassembly is the reverse of removal; verify all electrical connections are clean and tight before testing.

Frequently asked questions

How much does it cost to replace starter bushings on a International S120?
The bushing itself starts at $1.95 at AutoBuffy. Total cost depends on whether you do the job yourself or pay a shop. A DIY replacement costs little beyond the part. Professional labor adds one to two hours of shop time, since the starter must be removed and the old bushing driven out before the new one is pressed in.
Can I drive my International S120 with a worn starter bushing?
You can drive the vehicle normally once it starts, because the starter bushing only matters during cranking. However, a badly worn bushing will eventually destroy the starter motor armature. Every failed start attempt accelerates damage, so replacing the bushing promptly is far cheaper than replacing the entire starter assembly.
Do I need to replace the whole starter or just the bushing on my International S120?
If the starter motor itself tests good — correct no-load RPM, acceptable current draw, functional solenoid — replacing only the bushing is a legitimate and cost-effective repair. If the armature is already scored or the brushes are worn down, a full rebuild kit or replacement starter makes more sense than a bushing alone.
How do I know what size starter bushing fits my International S120?
Bushing size is determined by the inner diameter of the armature shaft and the outer diameter of the bore in the bell housing or end plate. Use the AutoBuffy fitment tool with your International S120's year and engine size to find the correct dimensions. Measuring the old bushing with calipers before ordering is also a reliable method.
Should I lubricate a new starter bushing on my International S120?
Sintered bronze bushings are oil-impregnated from the factory and generally require only a very light application of high-temperature grease or engine oil on the shaft during installation. Avoid over-greasing — excess lubricant attracts carbon dust from the brushes and can accelerate contamination wear rather than prevent it.
How long does a starter bushing last on a International S120?
Lifespan varies widely based on climate, how often the engine is started, and whether the original bushing was properly lubricated. Under normal conditions, a quality bronze or brass bushing should last many years. Frequent cold starts, extended cranking due to other engine issues, or running a starter dry will shorten service life considerably.

Shop starter bushings by year for the International S120

19571956

More parts for your International S120

Engine Oil Pressure SwitchDrum Brake Hardware KitAuxiliary Engine Cooling Fan AssemblyAir Brake Pressure SwitchClutch Pilot BearingStarter SolenoidAlternator Brush SetRadiator Cap

Starter bushings for other International models

International AM132International L122International B120International LM150International C110International D300