A-21M1810-AI Magneto Condenser

One New Aftermarket Replacement Magneto Condenser Fits International Harvester (IH) / Fits FARMALL Tractors

This aftermarket replacement magneto condenser fits the IH H1, H4, F4, and F6 magneto ignition systems used across a wide range of Fits International Harvester (IH), Fits FARMALL, and McCormick Deering tractors. The condenser works alongside the breaker points to absorb voltage spikes and prevent point arcing, maintaining a strong, reliable spark. A failed or leaking condenser is a common cause of weak spark, point pitting, and hard starting on these classic magneto-equipped machines. Verify your tractor is equipped with an H4, H1, F4, or F6 magneto before ordering -- this part does not fit models using Fits Delco, Prestolite, or IH horizontal distributor ignition systems.

Compatible Models

Fits International Harvester / Fits FARMALL / McCormick Deering: A, AV, B, BN, C, H, HV, M, MD, MDV, MV, MTA, O4, O6, OS4, OS6, ODS6, Super A, Super A-1, Super AV, Super AV-1, Super C, Super H, Super HV, Super M, Super MD, Super MDV, Super MTA, Super MV, Super W4, Super W6, Super W9, Super WD6, Super WD9, Super WDR9, T4, T5, T6, T9, TD6, TD9, TD14, TD14A, TD18, U2, U2A, U4, U6, U9, UD6, UD9, UD14, UD18, W4, W6, W6TA, W9, WD6, WD9, WDR9, WR9, WR9S, 100, 130, 200, 230, 300, 330, 340, 350, 400, 450, 600, 650 (tractors equipped with H1, H4, F4, or F6 magneto only)

Also compatible with select IH/McCormick Deering stationary engines equipped with H1 magnetos.

Replaces Part Number(s):

A-21M1810-AI, A-21M1810, 373892R91, 71455C91, A-71455C1, 1700-5058, 37389291

Aftermarket Interchange Numbers

Fits Napa IH201

New aftermarket replacement part - not remanufactured, not used.