27-94996Q2 Outdrive Gasket Kit Gimbal Housing Seal Set Fits MerCruiser MC-1 R MR Alpha Bravo Sterndrives

27-94996Q2 Outdrive Gasket Kit Gimbal Housing Seal Set — Fits MerCruiser MC-1 R MR Alpha Bravo Sterndrives, Replaces 27-64818A3 Sierra 18-2619-1 GLM 39622

Check drive S/N + gasket suffix before you order. GHMarine outdrive gasket kit for compatible MerCruiser sterndrives — housing gasket set only (27-94996Q2). Replaces 27-64818A3; crosses 18-2619-1, 39622, REC27-94996Q2.

Not bearing → 18MB001. Not 3-piece repair → 20BG004.

Which part is this?

GK ladder — pick the right shelf: 20GK002 = gasket kit only. 20GK003 = gasket + oil seal. 20GK004 / 20BG004 = bearing + seal + gasket.

This box is 1× outdrive gasket set (27-94996Q2) — no gimbal bearing (30-879194A01), no oil seal (26-88416). The flat gasket photo is the whole product here.

Signs yours is due

·       Oil weeping at the gimbal housing flange after the drive was pulled — often the housing gasket set was crushed or aged.

·       Shop already replaced the bearing and seal but you still need the flat gasket kit for reassembly — that's this listing.

·       You're doing a gasket-only reseal with the drive off — no bearing noise, just housing seal maintenance.

·       Catalog shows 27-94996Q2 or 27-64818A3 on the work order — confirm Q2 vs T2 suffix before checkout.

Before you order — two-minute check

Even matching drive models can need different gasket suffixes.

·       Sterndrive serial number (S/N) — two Alpha One drives can need different suffix kits.

·       Step 1 — work order / old gasket label: read 27-94996Q2, 27-64818A3, or aftermarket 18-2619-1 / 39622.

·       Step 2 — Q2 vs T2: 27-94996Q2 ends in Q2; 27-94996T2 is a different suffix — don't assume interchangeable.

·       If the job also needs bearing + seal, skip this SKU — order 20BG004 or build from 18MB001 + 20BG002.

·       18-2619-1 is a gasket set catalog number — not a bearing, not a full 3-piece repair kit.

Why gasket-only?

During transom service the housing gasket set gets replaced when the drive comes off — even if the bearing still spins fine. Shops split the job: bearing job today, gasket-only reseal tomorrow — this SKU is for that second path.

OEM 27-94996Q2 supersedes 27-64818A3 in many catalogs. Aftermarket crosses: 18-2619-1, 39622, REC27-94996Q2.

Need seal too? → 20GK003. Full hardware repair? → 20BG004.

Will it fit my drive?

MC-1, R/MR, Alpha One, and Bravo One gasket service bands per catalog. Drive serial required.

Brand	Model / Drive	Rated HP	Type	Years	OEM Part No.
MerCruiser	MC-1	120–260	Sterndrive	1974–1982	27-94996Q2
MerCruiser	R / MR	170–300	Sterndrive	1983–1997	27-94996Q2
MerCruiser	Alpha One Gen I	190–260	Sterndrive	1983–1990	27-94996Q2
MerCruiser	Alpha One Gen II (early)	190–300	Sterndrive	1991–1997	27-94996Q2
MerCruiser	Bravo One	260–350	Sterndrive	1988–1995	27-94996Q2

 

OEM & swap numbers

Type	Part Number	Notes
OEM gasket kit	27-94996Q2	Primary outdrive / gimbal housing gasket set
OEM superseded	27-64818A3	Older catalog number — same gasket family
OEM suffix variant	27-94996T2	T2 suffix — verify Q2 vs T2 before order
Aftermarket gasket	18-2619-1	Sierra Outdrive Gasket Set — replaces 27-94996Q2
Aftermarket gasket	39622	GLM cross for 27-94996Q2
Aftermarket gasket	REC27-94996Q2	Recmar cross for 27-94996Q2
Related seal (NOT in box)	26-88416	Oil seal — see 20GK003 or 20BG002
Related bearing (NOT in box)	30-879194A01	Gimbal bearing — see 18MB001 / 20BG004

 

Wrong part? Read before you order

·       NOT for gimbal bearing only — see GHMarine 18MB001 or 20BG003.

·       NOT for bearing + oil seal — see GHMarine 20BG002.

·       NOT for full 3-piece repair kit — see GHMarine 20BG004 or 20GK004.

·       NOT if you need oil seal 26-88416 without gasket — wrong SKU; gasket-only is 20GK002.

·       NOT for rubber exhaust bellows, U-joint bellows, or full transom hose kit — see GHMarine 17B3005.

What ships in the box

·       1 × Outdrive / gimbal housing gasket kit (27-94996Q2)

·       No gimbal bearing (30-879194A01)

·       No oil seal (26-88416)

·       No bellows or hoses

Often ordered with transom service

·       Full 3-piece repair — GHMarine 20BG004.

·       Gasket + oil seal — GHMarine 20GK003.

·       Bearing + seal (no gasket) — GHMarine 20BG002.

·       Single bearing — GHMarine 18MB001.

Install tips

1. Clean housing flange; remove old gasket material without scoring metal.

2. Dry-fit gasket orientation before final sealant (if your manual calls for it).

3. Torque housing bolts evenly; do not pinch the gasket set.

4. Refill gear lube per manual after reassembly.

5. Check for weep on muffs before launch.

FAQ

Is this a gimbal bearing or oil seal?

No. Gasket kit only (27-94996Q2). Bearing → 18MB001. Seal → order with 20GK003 or see 20BG002.

How is this different from 20BG004?

20BG004 is the 3-piece kit (30-879194A01 + 26-88416 + 27-94996Q2). This listing is gasket only.

What about 20GK003?

20GK003 adds the oil seal 26-88416 on top of this gasket. This SKU (20GK002) is gasket-only.

What is the difference between 27-94996Q2 and 27-94996T2?

Different catalog suffix families — read your removed label or work order. Do not swap Q2 and T2 without verifying drive serial.

My bro has the same drive — can I copy his order?

Verify your drive S/N and the suffix on the old gasket set first.

Is the big flat gasket photo the whole product?

Yes — for 20GK002 the gasket kit is the entire shipment. No bearing, no seal in the box.

Does 18-2619-1 replace 27-94996Q2?

Yes — 18-2619-1 is the common aftermarket Outdrive Gasket Set cross for 27-94996Q2 / 27-64818A3.

What is in the box?

1 × Outdrive / gimbal housing gasket kit (27-94996Q2). No bearing (30-879194A01). No oil seal (26-88416).

I'm mid-transom job — bearing already ordered separately?

Then this gasket-only SKU is probably what you want — unless you still need 26-88416 too (→ 20GK003).

Is this the same as a bellows kit?

No — this is the metal housing gasket set, not rubber bellows or U-joint boots.

Please note

Aftermarket replacement gasket kit. Not affiliated with engine manufacturers referenced above. Drive serial number is mandatory. Confirm Q2 vs T2 suffix before order.