Additional Details:

• Thread Size: 1/8" or 3.2mm - 27 NPT
• Note: Pipe sealant with Teflon is recommended for use on plug threads
• Material: Brass

Use With:

• 56507: Loctite Pipe Sealant (PST 6ml w/ Teflon)

Interchanges/Replaces

Chrysler/Force/US Marine

• 22-328021
• 22-328022
• F700633
• FI5810151

GLM

• 21893

Mercruiser Stern Drive

• 22-32802
• 22-328021
• 22-328022
• 22-841908

Mercury Marine

• 22-30139
• 22-32802
• 22-328021
• 22-328022

Key Features:

• Supplied with mounting package
• Port Side

Additional Details:

• Fits: MCM/MIE Ford V-8 engines (1977 & older)

Use With:

• 18-1906: Manifold Spacer
• 18-1971: Elbow
• 18-1978: Elbow
• 18-4008: Block Off Plate
• 18-4009: Manifold End Plate
• 18-0897: Exhaust Elbow Gasket
• 18-2849-1: Exhaust Elbow Gasket
• 18-0183-1: Exhaust Manifold Gasket
• 18-2832-1: Manifold End Cap Gasket

Interchanges/Replaces

Barr

• MC-1-65604

GLM

• 51250

Mallory

• 9-40502

Mercruiser Stern Drive

• 54100A1
• 54100A5
• 65604A12
• 65604A4

Osco

• 5604

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-4263	Chrysler/Force/US Marine 22-328021 22-328022 F700633 FI5810151 GLM 21893 Mercruiser Stern Drive 22-32802 22-328021 22-328022 22-841908 Mercury Marine 22-30139 22-32802 22-328021 22-328022	1	Pipe Plug		N/A
18-0183-1	Barr FM 47 0000 MC47-27-73866 GLM 33790 Mallory 9-61420 Mercruiser Stern Drive 27-54566 27-73866 OMC Stern Drive 3852455 3853742 908717 916262 Osco FL-GH Pleasurecraft RM0007 Volvo Penta 3852455 3853742	1	Exhaust Manifold Gasket		N/A
18-2832-1	Barr MC47-27-48043 GLM 31490 Mallory 9-61424 Mercruiser Stern Drive 27-48043 27-480431 Osco 48043	2	Manifold End Cap Gasket		N/A
18-2833	Barr MC472799777 GLM 31520 Mallory 9-61407 Mercruiser Stern Drive 27-52076 27-99777 27-997771 27-997772 27-99777B2 Osco 52076	1	Exhaust Elbow Gasket		N/A

Use With:

• 18-1913: Elbow
• 18-1941: Manifold End Plate
• 18-1942: Manifold End Plate w/ hole
• 18-1945: Riser
• 18-1946: Elbow
• 18-1940: Manifold

Interchanges/Replaces

Barr

• CM-20-6674P

Mallory

• 9-40373

Osco

• 480-MK

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-4257		2	Pipe Plug		N/A
18-4263	Chrysler/Force/US Marine 22-328021 22-328022 F700633 FI5810151 GLM 21893 Mercruiser Stern Drive 22-32802 22-328021 22-328022 22-841908 Mercury Marine 22-30139 22-32802 22-328021 22-328022	1	Pipe Plug		N/A
18-2941	Barr CM 1 6672D Chrysler Inboard 2469559 2847480 Mallory 9-65300 Osco 480	1	End Cap Gasket (Open)		N/A