This is a A-21A304D Conversion Kit, Electronic Ignition PN: 21A304DMain Description As Following : A-21A304D Conversion Kit, Electronic Ignition P.N: 21A304D For 4 cyl. models w/ 12 volt negative ground systems or 6 volt systems converted to 12 volt negative ground systems only.Distributor number: 1112583Dim A (1): Never change points again.Dim B (2): Easy installation, no complicated wiring, fits entirely inside distributor.Dim C (3): Increases spark plug life & horsepower, improves fuel economy.Dim D (4): Precision engineered solid state electronics.Dim E (5): For Delco Distributor Part #: 1885368 Crossed From: ED4C , , ED4CP6 , , EP4A , , WN-21A304D , , WN21A304D , , 1200-5200 , , 1200-5201 , , 1400-5203 , , 1600-5200 , , 1700-5202 , Found in Section & Models : Ignition & Electrical Parts > Ignition & Related Parts, Case-IH SKID STEER LOADER: 420 (W/ Delco Distributor), Case-IH TRACTOR: A (W/ Delco Distributor & Aftermarket Delco Battery Ign. Conv.), Case-IH TRACTOR: AV (W/ Delco Distributor & Aftermarket Delco Battery Ign. Conv., Case-IH TRACTOR: B (W/ Delco Distributor & Aftermarket Delco Battery Ign. Conv.), Case-IH TRACTOR: BN (W/ Delco Distributor & Aftermarket Delco Battery Ign. Conv., Case-IH TRACTOR: B414 (W/ Delco Distributor), Case-IH TRACTOR: C (W/ Delco Distributor & Aftermarket Delco Battery Ign. Conv.), Case-IH TRACTOR: H (W/ Delco Distributor & Aftermarket Delco Battery Ign. Conv.), Case-IH TRACTOR: HV (W/ Delco Distributor & Aftermarket Delco Battery Ign. Conv., Case-IH TRACTOR: M (W/ Delco Distributor & Aftermarket Delco Battery Ign. Conv.), Case-IH TRACTOR: MV (W/ Delco Distributor & Aftermarket Delco Battery Ign. Conv., Case-IH TRACTOR: SUPER A (W/ Delco Distributor & Aftermarket Delco Battery Ign., Case-IH TRACTOR: SUPER AV (W/ Delco Distributor & Aftermarket Delco Battery Ign., Case-IH TRACTOR: SUPER C (W/ Delco Distributor & Aftermarket Delco Battery Ign., Case-IH TRACTOR: SUPER H (W/ Delco Distributor & Aftermarket Delco Battery Ign., Case-IH TRACTOR: SUPER HV (W/ Delco Distributor & Aftermarket Delco Battery Ign., Case-IH TRACTOR: SUPER M (W/ Delco Distributor & Aftermarket Delco Battery Ign., Case-IH TRACTOR: SUPER MD (W/ Delco Distributor & Aftermarket Delco Battery Ign., Case-IH TRACTOR: SUPER MDV (W/ Delco Distributor & Aftermarket Delco Battery Ign, Case-IH TRACTOR: SUPER MTA (W/ Delco Distributor & Aftermarket Delco Battery Ign Associated Items : New Also A-FRM-IHOL, A-IH-C-DOMGENCAT, A-IH-C-MUSCLES, A-IH-C-1936FULL, A-IH-O-AAV, A-IH-O-ABSPCLA, A-IH-O-AIMPLS, A-IH-O-A1939, A-IH-P-AB, A-IH-P-ACCESSORY, A-IH-P-AW18MWR, A-IH-S-AAVBBN, A-IH-S-CARBSPEC, A-IH-S-CLUTCH, A-IH-S-ENGGASE, A-IH-S-HAYMAHNS, A-IH-S-TUNEUP, A-MAG-S-317, A-SMIH8, A-IH-O-AAV And : For 12 volt negative systems. Distributor number: 1112583 Dim A (1): Never change points again. Dim B (2): Easy installation, no complicated wiring, fits entirely inside distributor. Dim C (3): Increases spark plug life & horsepower, improves fuel economy. Dim D (4): Precision engineered solid state electronics. Dim E (5): For Delco Distributor Part #: 1885368