16777-66-X Gasket set, cylinder base 3-5/8" bore. .031" Foamet
Fits: 63-84 Big Twin (Excl. Evo) with 3-5…
incl. VAT
Chapter members save 15% · Sign in for member pricing
Estimated delivery: 3–15 working days
Authorised
Iron City Dealer
14-Day Returns
Easy & hassle-free
Secure Checkout
256-bit encryption
Free UK Delivery
On orders over £100
Specifications
- Brand
- James Gaskets
- Part Number
- 16777-66-X
- OEM Reference
- —
- Pack Quantity
- Pack of 2
- Category
- Gasket Sets Cylinder Base
- VAT Rate
- 20%
About This Product
James Gaskets cylinder base gasket set for 3-5/8 inch big bore. Foamet construction with aluminium core and nitrile synthetic rubber foam bonded both sides. 0.031 inch thick, crushes to 0.025 inch. Fits 1963 to 1984 Big Twin. Excludes Evolution engines. Sold as a set of two. Clean the deck surfaces and torque the base nuts evenly. Do not pinch the gasket at the bore.
Manufacturer part number: 16777-66-X.
Fitment
54 models63-84 Big Twin (Excl. Evo) with 3-5/8" big bore cylinders
Electra Glide 14 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1978 | Electra Glide FLH 80 FLH-80 |
| Harley-Davidson | 1975–1980 | Electra Glide FLH-1200 |
| Harley-Davidson | 1979–1980 | Electra Glide FLH-80 |
| Harley-Davidson | 1975 | Electra Glide FLHF |
| Harley-Davidson | 1977 | Electra Glide FLHS-1200 |
| Harley-Davidson | 1980 | Electra Glide FLHS-80 |
| Harley-Davidson | 1984 | FLH Police 80 FLH |
| Harley-Davidson | 1979–1980 | Glide Classic FLHC-80 |
| Harley-Davidson | 1983 | Police FLH |
| Harley-Davidson | 1979–1980 | Police FLH-1200 FLH-1200 |
| Harley-Davidson | 1979 | Touring Electra Glide Classic FLHC-80 |
| Harley-Davidson | 1978–1980 | Touring Electra Glide FLH-80 |
| Harley-Davidson | 1977 | Touring Electra Glide Sport FLHS-1200 |
| Harley-Davidson | 1980 | Touring Electra Glide Sport FLHS-80 |
FXR 4 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1982–1984 | FXR Low Glide FXRS |
| Harley-Davidson | 1982–1983 | FXR Super Glide FXR |
| Harley-Davidson | 1984 | FXR Touring FXRDG |
| Harley-Davidson | 1983–1984 | FXR Touring FXRT |
FXR Police 1 model
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1984 | Police Low Rider FXRP |
Low Rider 2 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1977–1979 | FX Super Glide FXS-1200 |
| Harley-Davidson | 1979–1980 | FX Super Glide FXS-80 |
Police 1 model
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1975 | Glide Police FL |
Police Electra Glide 1 model
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1979–1980 | Police FLH 80 FLHP-80 |
Softail 7 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1983 | Dyna Glide Glide Custom FXDG |
| Harley-Davidson | 1983–1984 | FX Low Rider FXSB |
| Harley-Davidson | 1981 | FX Super Glide Fat Bob FXEF |
| Harley-Davidson | 1981–1984 | FX Super Glide FXE |
| Harley-Davidson | 1981–1984 | FX Wide Glide FXWG |
| Harley-Davidson | 1984 | Softail Standard FXST |
| Harley-Davidson | 1981–1982 | Super Glide B80 FXB |
Super Glide 4 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1979–1980 | FX Super Glide Fat Bob FXEF-1200 |
| Harley-Davidson | 1979–1980 | FX Super Glide Fat Bob FXEF-80 |
| Harley-Davidson | 1976–1979 | FX Super Glide FXE-1200 |
| Harley-Davidson | 1976–1978 | Super Glide 1200 FX-1200 |
Tour Glide 3 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1979–1980 | Tour Glide FLT |
| Harley-Davidson | 1980 | Touring Tour Glide FLT |
| Harley-Davidson | 1983 | Touring Tour Glide FLTD |
Touring 16 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1970–1973 | Electra Glide FL-1200 |
| Harley-Davidson | 1966–1968 | Electra Glide FLB-1200 |
| Harley-Davidson | 1981–1983 | Electra Glide FLH |
| Harley-Davidson | 1971–1974 | Electra Glide FLH-1200 |
| Harley-Davidson | 1967–1969 | Electra Glide FLHB-1200 |
| Harley-Davidson | 1975 | Electra Glide FLHF-1200 |
| Harley-Davidson | 1983–1984 | Electra Glide FLHT |
| Harley-Davidson | 1983–1984 | Glide Classic FLHT |
| Harley-Davidson | 1971–1975 | Super Glide FX-1200 |
| Harley-Davidson | 1974 | Super Glide FXE-1200 |
| Harley-Davidson | 1982–1984 | Tour Glide Classic FLT |
| Harley-Davidson | 1981–1984 | Tour Glide FLT |
| Harley-Davidson | 1983–1984 | Touring Electra Glide Classic FLHTC |
| Harley-Davidson | 1984 | Touring Electra Glide FLH |
| Harley-Davidson | 1983 | Touring Electra Glide Standard FLHT |
| Harley-Davidson | 1981–1983 | Touring Tour Glide FLT |
74CI (1200CC) OHV Twin 1 model
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1978 | Electra Glide FLH |
Related Products
View all →
James Gaskets
Cylinder head & base gasket kit. .050" MLS
James Gaskets
Gasket set, cylinder base. RCM .022"
James Gaskets
Gasket set cylinder base. .031" Foamet
James Gaskets
Cylinder base gasket set. FR/RR. .025" Foamet
James Gaskets
Cylinder base gasket set. .022" RCM. 3-5/8" bore
James Gaskets
Gasket set, cylinder base. 3-5/8" bore. .020" RCM
James Gaskets
Gasket set, cylinder base. RCM .022"
James Gaskets
Gasket set, cylinder base. RCM .016"
More from James Gaskets
View all →
Gasket primary cover. .060" Foamet
Gasket inspection cover. .060" Foamet
Cylinder base gasket set FR/RR. .031" Foamet
O-ring shifter fork shaft. Round
Transmission gasket & seal kit
Throttle body/filter to air cleaner housing gasket
Gasket mainshaft seal retainer. Foamet
Gasket transmission end cover. Foamet
Who are we? Leeds Harley-Davidson - Iron City Motorcycles
This product is fulfilled by Iron City Motorcycles, Leeds' authorised Harley-Davidson® dealer, serving the UK with a full range of Genuine Motorclothes®, dealer merchandise, and official Harley-Davidson parts & accessories — available for UK and international delivery.
From OEM Parts to retro lifestyle wear to aftermarket stockits we have what you need to keep you riding all year round.
Use our official OEM parts finder to browse our full Genuine Harley-Davidson® Parts and our associated approved aftermarket catalogues.