OMC Parts Drawing *Cobra *Mercruiser *Alpha SEI Outdrives
OMC Cobra Bellows Kit
OMC Outdrive Bellows Kit - Exhaust / Drive Shaft 1986 - 1986 Cobra Sterndrive Models
Updated April 12th 2026
- GLM 21962 transom kit replaces Sierra 18-2771
- Includes clamp, exhaust, u-joint and shift cable bellow
- 21905 gimbal bearing and mounting gasket included
- Compatible with 1986 – 1993 models, 4 cylinder, V6 and V8 models
- Does not work with cone clutch King Cobra models
21962 Kit OMC Cobra
Parts included:
- Seal kit OEM 508105
- Shift cable bellow OEM 911826
- U-joint bellow OEM 854127
- Exhaust bellow OEM 914036
- Hose clamp OEM 3852604
- Hose clamp OEM 912628
- Gimbal bearing OEM 3853807
- Cable tie OEM 320107
- Cable tie OEM 317893
$149.95
US
$201.89
CDN
GLM 89190
PN 89190
OMC exhaust bellow. Note: this part is re-designed from the original OMC part, and contains additional outlet holes down the underside to relieve some of the back pressure created from the exhaust.
Replaces OEM 914036, Sierra 18-2764, Mallory 9-72706
$39.89 US
GLM 89200
P/N 89200
Drive shaft / u-joint bellow. Includes hose clamp.
Replaces OMC 3854127, Sierra 18-2765, Mallory 9-72707.
$47.89 CDN
GLM 89210
$15.89 CDN
GLM 21905 Gimbal bearing
P/N 21905
Gimbal bearing. Heavy duty design allows for more grease filling, and low carbon steel can operate at higher temperatures.
Replaces OMC 3853807, Mercury 30-862540A3, 30-60794A4, Sierra 18-21005, Mallory 9-72412.
$70.89 CDN
GLM 34730 Transom outdrive gasket OEM 915840
P/N 39630 Outdrive installation gasket kit. Installed between the transom housing and upper gear case when re-installing stern drive back onto boat. Make sure to use gasket compound on both side of gasket before installing (shown below).
Replaces 508105, Sierra 18-2613.
$7.89 CDN
Related Parts (Optional)
86560 Bell housing oil seal 3852548
$21.89 CDN
Johnson gasket compound 508235
P/N 508235
Used on mounting gasket, and o-rings and internal sterndrive gaskets.
$32.89 CDN