Difficulties in parts search?

Parts list

Difficulties in parts search?

	Description	OEM Part #	Price
1	1 893504T New Genuine Part	893504T	US $730.53
2	2 858266 Guide-valve	858266	—
3	3 4000325 Screw	4000325	US $3.25
4	4 859768 Washer	859768	US $3.25
5	5 858267 Seal, oil	858267	US $37.38
	replacement
5	5 893549 Seal, oil	893549	US $37.38
6	6 875209 Pipe plug	875209	US $5.57
7	7 893898 Seal	893898	US $15.95
8	8 893693A04 New Genuine Part	893693A04	US $102.11
9	9 893711 New Genuine Part	893711	US $23.22
10	10 8M0001075 Screw (M4)	8M0001075	US $3.25
11	11 NSS Not Sold Separate O-Ring	NSS	—
12	12 NSS Not Sold Separate O-Ring	NSS	—
13	13 825010 Pin, dowel	825010	US $3.71
14	14 834777 Gasket	834777	US $62.76
	replacement
14	14 8M0118180 Head Gasket	8M0118180	US $62.76
15	15 40011128 Screw, starter housing attaching	40011128	US $3.94
	replacement
15	15 8M4503518 Screw (M6 X 1.0 X 20)	8M4503518	US $4.68
16	16 82503395 Screw	82503395	US $22.85
17	17 82500925 Screw	82500925	US $2.08
	replacement
17	17 893745025 Screw (M6 X 25)	893745025	US $2.08
18	18 629101 Fitting, elbow - 90 degree	629101	US $11.71
19	19 830294T1 New Genuine Part Handle	830294T1	US $118.45
20	20 40011126 Screw, stainless steel Handle	40011126	US $3.25
21	21 859578A1 Oil plug	859578A1	US $6.61
22	22 90196 O-ring	90196	US $5.10
	replacement
22	22 8M0204673 O-ring	8M0204673	US $5.10
23	23 NSS Not Sold Separate O-Ring	NSS	—
24	24 8M0026326 New Genuine Part	8M0026326	US $11.47
25	25 8M0012661 Screw	8M0012661	US $22.61
NI	NI 893504T02 New Genuine Part	893504T02	US $1,171.65
NI	NI 825231A02 Gasket Set Engine	825231A02	US $310.78

Cylinder Head Diagram Mercury-Mercruiser F40 18234438-945695