RED BEARD SAWS V STACK ADAPTER FITS STIHL 044 MS440 064 066 MS660 HUSQVARNA 445 Part A130002170 (CYLINDER) Where Used: Part A130002170 (CYLINDER) Where Used: · PB 500H S N: P31312001001 P31312999999 >Engine S N: P31312085001 P31312999999 · PB 500H S N: P31513001001 P31513999999 >Engine S N: P31513010001 P31513999999 · PB 500H S N: P33011001001 P33011999999 >Engine S N: P33011010001 P33011999999 · PB 500T S N: P31212001001 P31212999999 >Engine S N: P31212300001 P31212999999 · PB 500T S N: P31413001001 P31413999999 >Engine S N: P31413010001 P31413999999 · PB 500T S N: P32911001001 P32911999999 >Engine S N: P32911010001 P32911999999 Our carbs come from trusted sources and manufacturers that have a proven history of offering good quality Note: The air filter cover will not fit back onto the saw with the use of this product * Comes with a small piece of foam to put into the carburetor inlet *