High pressure water valve etec 250 hp 2007

does anybady know what part of the water valve should i replace to fix the escape of water?

"looks like a diaphragm,and a

"looks like a diaphragm,and a cpl o rings..

"here is the parts list--u can

"here is the parts list--u can see all this,at shop.evinrude.com





1 5006527 VALVE, Pressure relief Assy. 1 $189.50 USD Available
2 0347239 *HOUSING 1 $15.20 USD Available
3 0314728 *O-RING, Housing cover 2 $2.90 USD Available
4 0347245 *SEAL, Plunger 1 $7.91 USD Available
5 0352778 *PLUNGER 1 $7.75 USD Available
6 0352801 *SPRING 1 $10.32 USD Available
7 0347240 *PLATE, Housing 1 $6.78 USD Limited
8 0352328 *DIAPHRAGM 1 $20.34 USD Available
9 0347243 *SUPPORT, Diaphragm 1 $5.00 USD Available
10 0328649 *SCREW, Plunger 2 $3.73 USD Available
11 0347241 *COVER, Housing 1 $8.61 USD Available
12 0124341 *SCREW, Cover 2 $3.33 USD Available
13 0313022 *NUT,LOCK 4 $3.47 USD Available
14 0347248 *HOSE, Head to valve 2 $6.24 USD Available
15 0351878 *HOSE, Valve to head 2 $5.58 USD Available
16 0346152 *CLAMP, 25.6mm 8 $1.93 USD Available
17 0347242 *BRACKET, Mount 1 Not Available
18 0352322 *SCREW, Bracket cover 2 $1.16 USD Available"