# Twin Power 99-06 BT EXC 99 FLHT 06 Dyna Transmission Top Cover Gasket Replaces H-D 34904-86C 5 Pk

Twin Power™ transmission top cover gaskets seal the top cover to the transmission case on late 4-speed and 5-speed Big Twin models, helping prevent oil seepage during service.

-   Model specific coverage for 1986-2006 Big Twin applications, with noted FLHT and 2006 Dyna exclusions
-   Direct fit replacements for Harley-Davidson 34904-86B and 34904-86C
-   Convenient 5-packs for multiple services
-   Made in USA

This Part Fits:

Year

Make

Model

Submodel

1999-2006

Harley-Davidson

FLHR Road King

Base

1999-2006

Harley-Davidson

FLHRCI Road King Classic

Base

2000-2006

Harley-Davidson

FLHRI Road King

Base

2004-2006

Harley-Davidson

FLHRS Road King Custom

Base

2002

Harley-Davidson

FLHRSEI Screamin Eagle Road King

Base

2003

Harley-Davidson

FLHRSEI2 Screamin Eagle Road King 2

Base

1999-2006

Harley-Davidson

FLHT Electra Glide Standard

Base

1999-2005

Harley-Davidson

FLHTC Electra Glide Classic

Base

1999-2006

Harley-Davidson

FLHTCI Electra Glide Classic

Base

1999-2006

Harley-Davidson

FLHTCUI Electra Glide Ultra Classic

Base

2003-2006

Harley-Davidson

FLHTI Electra Glide Standard

Base

2006

Harley-Davidson

FLHX Street Glide

Base

2006

Harley-Davidson

FLST Heritage Softail

Base

1999-2006

Harley-Davidson

FLSTC Heritage Softail Classic

Base

2001-2006

Harley-Davidson

FLSTCI Heritage Softail Classic

Base

1999-2006

Harley-Davidson

FLSTF Fat Boy

Base

2001-2006

Harley-Davidson

FLSTFI Fat Boy

Base

2005-2006

Harley-Davidson

FLSTN Softail Deluxe

Base

1999-2004

Harley-Davidson

FLSTS Heritage Springer

Base

2005-2006

Harley-Davidson

FLSTSC Softail Springer Classic

Base

2001-2003

Harley-Davidson

FLSTSI Heritage Springer

Base

1999-2006

Harley-Davidson

FLTR Road Glide

Base

1999-2006

Harley-Davidson

FLTRI Road Glide

Base

1999-2006

Harley-Davidson

FXSTB Night Train

Base

2001-2006

Harley-Davidson

FXSTBI Night Train

Base

1999

Harley-Davidson

FXSTC Softail Custom

Base

2000-2006

Harley-Davidson

FXSTD Softail Deuce

Base

2001-2006

Harley-Davidson

FXSTDI Softail Deuce

Base

2003-2004

Harley-Davidson

FXSTDSE Screamin Eagle Softail Deuce

Base

2001-2006

Harley-Davidson

FXSTI Softail Standard

Base

1999-2006

Harley-Davidson

FXSTS Springer Softail

Base

2001-2006

Harley-Davidson

FXSTSI Springer Softail

Base

## Details

- **Price:** 47.54 CAD
- **Vendor:** TwinPower
- **Type:** Gasket Kits

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 47.54 CAD | In stock |

## Images

- Photo - Primary

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/twin-power-99-06-bt-exc-99-flht-06-dyna-transmission-top-cover-gasket-replaces-h-d-34904-86c-5-pk)
> Updated: 2026-07-01