Difficulties in parts search?

Parts list

Difficulties in parts search?

	Description	OEM Part #	Price
1	1 825087 Pin	825087	US $18.78
2	2 825088 Spring	825088	—
3	3 824796A1 New Genuine Part	824796A1	US $228.45
4	4 81893420 Screw	81893420	US $5.10
5	5 826165 Screw	826165	—
6	6 825085 Nut [0G437999] & Below	825085	—
7	7 850522 Spacer [0G438000] & Up	850522	—
8	8 834838 LOAD RING [0G438000] & Up	834838	US $44.71
9	9 825082 Washer	825082	—
10	10 825083 New Genuine Part	825083	US $90.45
	replacement
10	10 825083T New Genuine Part	825083T	US $90.45
11	11 18856M Key	18856M	US $7.78
	replacement
11	11 893761 Key	893761	US $7.78
12	12 825109 Belt-timing	825109	US $204.90
13	13 82761140 Screw	82761140	US $4.64
14	14 4002319 Washer	4002319	—
15	15 825108 New Genuine Part	825108	—
16	16 825048 Seal, oil	825048	US $27.89
17	17 825956 Pin, dowel	825956	—
18	18 825047 Camshaft	825047	US $698.90
	replacement
18	18 8250471 CAMSHAFT	8250471	US $698.90
19	19 826149 Pin	826149	US $1.62
20	20 825058A1 New Genuine Part	825058A1	—
21	21 826152 O-ring	826152	US $3.36
22	22 826154 O-ring	826154	US $1.86
23	23 826153 O-ring	826153	US $8.46
24	24 4000333 Screw	4000333	US $4.64
NI	NI 832013A96 Gasket Set	832013A96	US $388.56
NI	NI 822775A97 Powerhead Assembly	822775A97	—
	replacement
NI	NI 822775T97 Powerhead Assembly	822775T97	—
NI	NI 822775A98 Powerhead Assembly (BIGFOOT)	822775A98	—
NI	NI 825034A8 Head assy-cyl	825034A8	—
	replacement
NI	NI 825034A17 New Genuine Part	825034A17	—

Camshaft/oil Pump Diagram Mercury-Mercruiser F50 18235624-945725