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420 GM 454 V8 1987-1989 - Serial 0A398941 Thru 0B622418 - Exhaust Manifold - Elbow (425 GIL System)

Section Drawing: (Hover or click to view larger)

Untitled Document
Ref. OEM Part # Hardin # Mallory # GLM # Other # Description Num Req. Superseded From Special Notes
1 8M0084206         MANIFOLD ASSEMBLY, Exhaust - Port 1 814901A5
1 814901T6         MANIFOLD ASSEMBLY, Exhaust - Starboard 1 814901A6
2 16-815214         STUD 8

3 32-8152121         HOSE, Manifold To Exhaust Pipe 2

4 22-816035         FITTING 2

5 19-815203         PLUG, Pipe 2

5A 22-818768         FITTING, Straight 2

6 19-815205         FREEZE PLUG (1.00 Inch) 10   This Part is No Longer Available
7 19-815204         FREEZE PLUG (.750 Inch) 4

8 22-815208         FITTING, Tee 4   This Part is No Longer Available
9 22-815210         FITTING, Tee 1   This Part is No Longer Available
10 22-815210         FITTING, Tee 1   This Part is No Longer Available
11 22-815209         FITTING, Tee 2   This Part is No Longer Available
12 19-815211         PLUG, Pipe Drain 2   This Part is No Longer Available
13 32-815215         HOSE (3.500 Inches) 6

14 54-815207         CLAMP 16

15 16-49545         STUD (.375-16 x 1.750) 4

15 16-821279         STUD (.375-16 x 2.187) 4

16 10-821107         SCREW, (.375-16 x 3.00) 8

16 10-815166         SCREW, (.375-16 x 5.625) 8   This Part is No Longer Available
17 10-815687         SCREW, (.375-16 x 1.250) Stainless Steel 4

17 10-812567         SCREW, (.375-16 x 1.625) 4

18 12-20572         WASHER, (.390 x .750 x .093) 8

19 12-37828         WASHER, (.390 x .625 x .062) Stainless Steel 8

20 11-25269         NUT, (.375-24) 4

21 27-46820         GASKET, Exhaust Manifold To Head 2
3
22 818495A1         TAILPIPE ASSEMBLY, Exhaust 2   This Part is No Longer Available Standard
22 818496A1         TAILPIPE ASSEMBLY, Exhaust OPT   This Part is No Longer Available (3.00 Inches)
22 818497A1         TAILPIPE ASSEMBLY, Exhaust OPT   This Part is No Longer Available (6.00 Inches)
23 27-848147         GASKET, Exhaust Elbow 2

24 12-49112         WASHER 8   This Part is No Longer Available
25 11-68411         NUT, (.375-16) 8
No longer made, limited availability
26 816037         PLATE, Diffuser 2

27 32-688941         HOSE, (48.00 Inches Bulk) (6.00 Inches) Cut As Required 1

28 54-815504105         CLAMP, Worm Gear 2

- 27-808730A98         GASKET SET 1 27-808730A92 This Part is No Longer Available
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