Impeller - Mercury

ARP BBC Flywheel/Flexplate Bolts

• Chevy 90° V6 & 265-454 with 2-pc Rear Seal
• Ford 289-460
• 7/16"-20 x 1.00"

Flywheel and flexplate bolts play an important role in the performance and safety of both street and race cars, which is why the fastener experts at ARP developed bolts far superior to OE hardware. ARP offers two series of flywheel/flexplate bolts: Pro and High-Performance. Forged from aerospace alloy and heat-treated prior to thread rolling and machining, both series feature a flat 12-point head design and larger-than-stock shank for improved strength and flywheel register. The premium grade Pro Series has a 190,000 psi rating (originally developed for NASCAR Winston Cup competition), and the popular High-Performance Series has a 170,000 psi rating.

Interchanges/Replaces

GLM

• 12250

Mallory

• 9-48300

Mercury Marine

• 47-89983Q1
• 47-89983T2

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-2823	GLM 31060 Mallory 9-60039 Mercruiser Stern Drive 27-32769 Mercury Marine 27-19553 27-32769	1	Lower Water Pump Gasket		N/A
18-2824	GLM 31070 Mallory 9-60029 Mercury Marine 27-19551 27-32770	1	Upper Water Pump Gasket		N/A
18-2825	GLM 31080 Mallory 9-60030 Mercury Marine 27-32771	1	Water Pump Base Gasket		N/A
18-2841	GLM 31190 Mallory 9-60033 Mercury Marine 27-19552 27-77417	1	Water Pump Base Gasket		N/A
18-2945	Chrysler/Force/US Marine 12-19183 F50556 F8077 F8186 Johnson/Evinrude Outboard 307552 Mallory 9-60101 9-60102 Mercruiser Stern Drive 12-19183 12-191832 12-191833 12-19183B 12-20260 12-20260B Mercury Marine 12-19183 12-191832 12-191833 12-20260	2	Drain Screw Gasket		N/A
18-2948	GLM 31180 Mallory 9-43629 Mercruiser Stern Drive 12-49221 Mercury Marine 12-49221 12-492211 27-23245 Mercury Sport Jet 12-49221	1	Rubber Washer		N/A
18-3007	GLM 89830 Mallory 9-45300 Mercruiser Stern Drive 47-20268 Mercury Marine 47-20268 47-65959 47-89983 47-89983T	1	Impeller		N/A
18-3107	GLM 12520 Mallory 9-43407 Mercury Marine 32768 54705	1	Impeller Plate		N/A
18-7155	Chrysler/Force/US Marine 25-26855 GLM 82230 Johnson/Evinrude Outboard 305270 Mallory 9-76541 Mercruiser Stern Drive 25-26855 Mercury Marine 25-26855 Yamaha Outboard 93210-41MJ2-00	1	O-Ring		N/A
18-7174	Chrysler/Force/US Marine 25-45711 25-F455342 GLM 81140 Johnson/Evinrude Outboard 326649 553127 Mallory 9-76553 Mercruiser Stern Drive 25-45711 Mercury Marine 25-45711 Mercury Sport Jet 25-45711 OMC Stern Drive 326649 553127 910582	1	O-Ring		N/A
18-7115	GLM 82240 Johnson/Evinrude Outboard 302588 Mercruiser Stern Drive 25-20266 25-26722 Mercury Marine 25-20266 25-26722 OMC Stern Drive 302588	1	O-Ring		N/A

Additional Details:

• For:: #1 Units thru S/N D494569
• Type: Similar to 18-3314, 18-3316, 18-3319 without base or housing

Interchanges/Replaces

GLM

• 12290

Mallory

• 9-48304

Mercruiser Stern Drive

• 46-96148A8

Mercury Marine

• 46-32437A1
• 46-32437A3
• 46-37433A1
• 46-42579A4
• 46-44292A4
• 46-44579A4
• 46-48747A3
• 46-57234A3
• 46-58618A4
• 46-60367A1
• 46-60367A4
• 46-64141A11
• 46-69222A3
• 46-73803A3
• 46-73804A3
• 46-78400A2
• 46-9614888
• 46-96148A5
• 46-96148A8

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-2801	GLM 31030 Mallory 9-60028 Mercruiser Stern Drive 27-32438 Mercury Marine 27-32438	1	Water Pump Gasket		N/A
18-2826	GLM 31040 Mallory 9-60036 Mercruiser Stern Drive 27-33146 27-856704 Mercury Marine 27-33146 27-85610 27-856101	1	Water Pump Base Gasket		N/A
18-2914	GLM 31010 Mallory 9-60034 Mercruiser Stern Drive 27-32433 27-856081 27-8M0090319 Mercury Marine 27-30603 27-32433 27-85608 27-856081 27-8M0090319	1	Water Pump Gasket		N/A
18-2915	GLM 31020 Mallory 9-60035 Mercruiser Stern Drive 27-32434 27-856091 27-858524 Mercury Marine 27-30604 27-32434 27-85609 27-856091 27-858524	1	Water Pump Gasket		N/A
18-2919	GLM 31050 Mallory 9-60031 Mercruiser Stern Drive 27-426311 Mercury Marine 27-42631 27-426311	1	Water Pump Gasket		N/A
18-2944	GLM 85140 Mallory 9-76512 Mercruiser Stern Drive 26-45577 26-455771 26-45577B 26-45577B1	1	Seal Ring Gasket		N/A
18-2945	Chrysler/Force/US Marine 12-19183 F50556 F8077 F8186 Johnson/Evinrude Outboard 307552 Mallory 9-60101 9-60102 Mercruiser Stern Drive 12-19183 12-191832 12-191833 12-19183B 12-20260 12-20260B Mercury Marine 12-19183 12-191832 12-191833 12-20260	2	Drain Screw Gasket		N/A
18-3017	Chrysler/Force/US Marine 47-803631T 47-F694065 GLM 89840 Mallory 9-45306 Mercruiser Stern Drive 47-30221 47-65960 47-89984 47-89984T4 Mercury Marine 47-30221 47-65960 47-85460 47-89984 47-899842 47-899844 47-89984T3 47-89984T4	1	Impeller		N/A
18-3109	GLM 12820 Mallory 9-43623 Mercruiser Stern Drive 23-29804 23-29804T 23-52928 Mercury Marine 23-29804 23-29804T	1	Water Tube Guide		N/A
18-3110	GLM 12830 Mallory 9-43604 Mercruiser Stern Drive 26-38970 Mercury Marine 26-29677 26-36557A1 26-38970	1	Water Pump Housing Bushing		N/A
18-3117	GLM 12510 Mallory 9-43400 Mercruiser Stern Drive 32435 Mercury Marine 30605 32435 324351 32435B	1	Impeller Plate		N/A
18-7158	GLM 81160 Johnson/Evinrude Outboard 309731 310585 Mallory 9-76543 Mercruiser Stern Drive 25-30613 25-846357 Mercury Marine 25-30613 25-846357 OMC Stern Drive 310585 310967	1	O-Ring		N/A
18-7162	Chrysler/Force/US Marine 25-33145 GLM 82260 Johnson/Evinrude Outboard 302337 Mallory 9-76547 Mercruiser Stern Drive 25-32424 25-33145 Mercury Marine 25-33145 Mercury Sport Jet 25-33145 OMC Stern Drive 302337 302377 3852044 Sears 25-33145 Volvo Penta 3852044	1	O-Ring		N/A
18-7173	Chrysler/Force/US Marine 25-30224 GLM 82250 Johnson/Evinrude Outboard 310327 Mallory 9-76501 Mercruiser Stern Drive 25-30224 25-30224Q Mercury Marine 25-27018 25-30224 25-30224Q OMC Stern Drive 310327	1	O-Ring		N/A
18-7176	Chrysler/Force/US Marine 25-90011 25-F74305 F694555 F74035 F74305-1 GLM 81390 Mallory 9-76554 Mercruiser Stern Drive 25-896523 25-90011 Mercury Marine 25-896523 25-90011	1	O-Ring		N/A
18-7426	GLM 21330 Mallory 9-76562 Mercruiser Stern Drive 25-30271 Mercury Marine 25-30271 Mercury Sport Jet 25-30271	1	O-Ring		N/A
NSS	Mercury Marine 25-38099	1	O-Ring	No Image	N/A

Additional Details:

• For:: Alpha I - Generation II S/N D494569 & above

Interchanges/Replaces

GLM

• 12042

Honda Outboard

• 19021-ZW1-003

Mallory

• 9-48313

Mercury Marine

• 47-43026Q06
• 47-43026Q5
• 47-43026T10
• 47-43026T11
• 47-43026T6
• 47-43026T7
• 47-43026T8
• 47-43026T9
• 47-8M0100526

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-2564	Chrysler/Force/US Marine 27-430331 GLM 30090 Honda Outboard 19234-ZW1-003 Mallory 9-60020 Mercruiser Stern Drive 27-430331 Mercury Marine 27-43033 27-430331	1	Impeller Gasket		N/A
18-2565	Chrysler/Force/US Marine 27-430472 GLM 30320 Honda Outboard 19242-ZW1-003 Mallory 9-60022 Mercury Marine 27-43047 27-430471 27-430472	1	Impeller Gasket		N/A
18-2566	Chrysler/Force/US Marine 27-817277 GLM 30290 Mallory 9-60023 Mercruiser Stern Drive 27-817277 27-8172771 Mercury Marine 27-817277 27-8172771	1	Impeller Gasket		N/A
18-2944	GLM 85140 Mallory 9-76512 Mercruiser Stern Drive 26-45577 26-455771 26-45577B 26-45577B1	1	Seal Ring Gasket		N/A
18-3056	Chrysler/Force/US Marine 47-430262 GLM 89630 Honda Outboard 19210-ZW1-303 Mallory 9-45307 Mercruiser Stern Drive 47-430262 47-43026T2 Mercury Marine 43026Q02 47-430261 47-430262 47-430264 47-43026B2 47-43026T2	1	Impeller		N/A
18-3122	Chrysler/Force/US Marine 817276 8172761 GLM 12500 Honda Outboard 19231-ZW1-003 Mallory 9-43413 Mercruiser Stern Drive 817276 Mercury Marine 817276 8172761 8172763	1	Impeller Plate		N/A
18-7420	GLM 82110 Mallory 9-76565 Mercruiser Stern Drive 25-21836 Mercury Marine 25-21836 Mercury Race Outboard 25-21836 Mercury Race Sterndrive 25-21836 Mercury Sport Jet 25-21836	2	O-Ring		N/A

Interchanges/Replaces

GLM

• 12520

Mallory

• 9-43407

Mercury Marine

• 32768
• 54705