Darton Sleeves 3.985" Bore Cylinder Sleeve 5.820" Height 4.251" OD 0.133" Wall - Steel 34015BL Available in black in sizes

Available in black in sizes Child X-Small to Child X-Large - remember that racing underwear is designed and built to fit snugly

Black Anodized for durable good looks

Triple pass radiators circulate coolant across the top portion of the radiator

B3121 / B3121C

Darton Sleeves 3.985" Bore Cylinder Sleeve 5.820" Height 4.251" OD 0.133" Wall - Steel 34015BL Available in black in sizesProduct Description: Cylinder Sleeve 3. 985 in Bore 5. 820 in Height 4. 251 in OD 0. 133 in Wall Steel Small Block Ford Sold Individually Darton is a manufacture of engine block sleeves. Using specialized ductile iron, their sleeves fit a variety of engine makes and sizes.