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2016roadiron

538 AV&V MANGANESE-BRONZE ALLOY AND CAST IRON VALVE GUIDES We precision machine our valve guides from a special manganese-bronze alloy. We use this valve guide material for it’s higher durability and superior heat transfer capability. This alloy allows you to fit the valve at a tighter clearance than any other valve guide alloy currently on the market. Note: All AV&V valve guides use OEM standard size valve seals. Shovelhead® & Panhead® 1200 cc 48-79 Use with OEM size valve seals Mang. Bronze Outside diameter Oversize Inside diameter Mang. bronze 0.566” std 0.375” 53-2046 0.567” 0.001” 0.375” 53-2047 0.568” 0.002” 0.375” 53-2048 0.569” 0.003” 0.375” 53-2049 0.570” 0.004” 0.375” 53-2050 0.571” 0.005” 0.375” 53-2051 0.591” 0.025” 0.375” 53-2057 Shovelhead® 1340 cc 79-Up Use with OEM size valve seals Mang. Bronze Outside diameter Oversize Inside diameter Mang bronze 0.625” std 0.375” 53-2058 0.626” 0.001” 0.375” 53-2059 0.627” 0.002” 0.375” 53-2060 0.628” 0.003” 0.375” 53-2061 0.629” 0.004” 0.375” 53-2062 0.650” 0.025” 0.375” 53-2069 XL® 1957 to early 1983 Cast iron only Outside diameter Oversize Inside diameter Part# Exhaust Part# Intake 0.5645” std 0.309”/.0339” 53-2148 53-2144 0.5655” 0.001” 0.309”/.0339” 53-2149 53-2145 0.5655” 0.002” 0.309”/.0339” 53-2150


2016roadiron
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