SEI Marine will be closed from noon on Dec 24th and Reopen at 8 A.M. on January 2nd. Any orders placed while we are closed will ship on January 2nd. Happy Holidays

Sterndrive Engineering: Detroit, CAT, Cummins & Others 24V 70-Amp Saddle Mount 7/8" Shaft Delco 21-SI Style Alternator 2-Wir
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    Detroit, CAT, Cummins & Others 24V 70-Amp Saddle Mount 7/8" Shaft Delco 21-SI Style Alternator 2-Wir

    Detroit, CAT, Cummins & Others 24V 70-Amp Saddle Mount 7/8" Shaft Delco 21-SI Style Alternator 2-Wir
    Purchase Detroit, CAT, Cummins & Others 24V 70-Amp Saddle Mount 7/8" Shaft Delco 21-SI Style Alternator 2-Wir

    SKU: 21001 OE#: 3920618 Brand: API Marine Detroit, CAT, Cummins & Others 24V 70-Amp Saddle Mount 7/8" Shaft Delco 21-SI Style Alternator 2-Wir

    $238.00

    Delco 21SI &22SI Are Used On Cat, Cummins Detroit & Other Diesel Engines
    One-Wire System Neg Ground
    OE# 3920618;3675174RX

    Not SUPPLIED WITH PULLEY  

    DELCO # 19010195; 10461235