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    S&S® Aluminum Cylinder Heads For HD® 1936 V and 1937-'48 U Model Flathead Sidevalve Engines - Natural Aluminum Finish

    Item #: 106-2475
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    S&S® aluminum nine bolt cylinder heads for 1936 V model and 1937-'48 U model flathead sidevalve engines offer better cooling than stock cast iron heads. Kit includes front and rear heads and copper head gaskets. Head bolts are not included. This is a special order part. Options include compression ratio (5.5:1, 6.1:1, 6.25:1, or 7:1) based on an 80" engine, and your choice of machining for stock 18mm, or more readily available 14mm spark plugs. Download the Special Order Form at

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