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

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