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• 90-121-01A - SE121 Bravo I, II, III Upper Unit 30/23 Gear Tooth Count Replaces 1589-8868H88 1589-863836A52

90-121-01A - SE121 Bravo I, II, III Upper Unit 30/23 Gear Tooth Count Replaces 1589-8868H88 1589-863836A52

List Price —	Your Price $2545.00
Part Number 90-121-01A	Manufacturer SEI Marine

Available to Order

SECURE CHECKOUT
SPEEDY DELIVERY
30-DAY RETURN
FULL WARRANTY

Installation Kit sold separately, please see below.

SE121 Upper Gear Housing Complete

30 tooth drive gear / 23 tooth pinion gear
Fits Bravo I, 1.65:1 Gear Ratio
Fits Bravo II, 2.20:1 Gear Ratio
Fits Bravo III, 2.20:1 and 2.43 :1 Gear Ratios
Not a replacement for Bravo X, XR or XZ drives.
Rated for up to 425HP.

Replaces 1589-8868H88, 1589-863836A52 & 1589-863836R52

Related Items

Installation Kit
90-121-03K

SEI Marine 90-121-01a - Se121 Bravo I, Ii, Iii Upper Unit 30/23 Gear Tooth Count Replaces 1589-8868h88 1589-863836a52 is equivalent to parts:

• 8868H88 Mercury Marine
• 863836R52 Mercury Marine
• 863836A52 Mercury Marine
• 15898868H88 Mercury Marine
• 1589863836R52 Mercury Marine
• 1589863836A52 Mercury Marine
• 1589-8868H88 Mercury Marine
• 1589-863836R52 Mercury Marine
• 1589-863836A52 Mercury Marine
• 1589 8868H88 Mercury Marine
• 1589 863836R52 Mercury Marine
• 1589 863836A52 Mercury Marine

SEI is the largest manufacturer of aftermarket sterndrives and outboard lower units in the world. Every SEI complete gearcase and outdrive carries a 3-Year No-Fault Warranty.

List Price
—

Your Price
$2,545.00

Available to Order

SECURE CHECKOUT
SPEEDY DELIVERY
30-DAY RETURN
FULL WARRANTY

Part Number
90-121-01A

Manufacturer
SEI Marine

Installation Kit sold separately, please see below.

SE121 Upper Gear Housing Complete

30 tooth drive gear / 23 tooth pinion gear
Fits Bravo I, 1.65:1 Gear Ratio
Fits Bravo II, 2.20:1 Gear Ratio
Fits Bravo III, 2.20:1 and 2.43 :1 Gear Ratios
Not a replacement for Bravo X, XR or XZ drives.
Rated for up to 425HP.

Replaces 1589-8868H88, 1589-863836A52 & 1589-863836R52

 

Related Items

Installation Kit
90-121-03K

SEI Marine 90-121-01a - Se121 Bravo I, Ii, Iii Upper Unit 30/23 Gear Tooth Count Replaces 1589-8868h88 1589-863836a52 is equivalent to parts:

• 8868H88 Mercury Marine
• 863836R52 Mercury Marine
• 863836A52 Mercury Marine
• 15898868H88 Mercury Marine
• 1589863836R52 Mercury Marine
• 1589863836A52 Mercury Marine
• 1589-8868H88 Mercury Marine
• 1589-863836R52 Mercury Marine
• 1589-863836A52 Mercury Marine
• 1589 8868H88 Mercury Marine
• 1589 863836R52 Mercury Marine
• 1589 863836A52 Mercury Marine

SEI is the largest manufacturer of aftermarket sterndrives and outboard lower units in the world. Every SEI complete gearcase and outdrive carries a 3-Year No-Fault Warranty.

90-121-01A - SE121 Bravo I, II, III Upper Unit 30/23 Gear Tooth Count Replaces 1589-8868H88 1589-863836A52 75.0000 75.0000 lb SEI Marine 90-121-01A Installation Kit sold separately, please see below. SE121 Upper Gear Housing Complete 30 tooth drive gear / 23 tooth pinion gearFits Bravo I, 1.65:1 Gear RatioFits Bravo II, 2.20:1 Gear RatioFits Bravo III, 2.20:1 and 2.43 :1 Gear RatiosNot a replacement for Bravo X, XR or XZ drives.Rated for up to 425HP.Replaces 1589-8868H88, 1589-863836A52 and 1589-863836R52 2,545.00