Pump

Water Pump Bolt Layout
Courtesy of John Carey, based on his Series 2
Note: Fasteners may vary by Series and equipment

Dia x Pitch x Length
I&J: 5/16" x 24 x 3 1/4" UNF
K&L: 5/16" x 18 x 1 1/2" UNC
M: 5/16" x 24 x 2 5/8" UNF
N: 5/16"x 24 x 3 1/8" UNF
O: 5/16" x 24 x 2 3/4" UNF
P: 5/16" x 24 x 2 5/8" UNF
Q: 5/16" x 18 x 1 1/8" UNC

Part Number
UFB.131/26 R
UCS.131/12 R
UFB.131/21 R
UFB.131/25 R
UFB.131/22 R
UFB.131.21 R
UCS.131/9 R