8171-8-Z Cyl base lockwashers
incl. VAT
Chapter members save 14% · 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
- Colony
- Part Number
- 8171-8-Z
- OEM Reference
- 7055
- Pack Quantity
- Pack of 8
- Category
- Cylinder Base Spacers
- VAT Rate
- 20%
About This Product
Colony cylinder base lockwashers replace OEM 7055. They fit 1930 to 1978 OHV and side-valve Big Twin models and 1957 to 1986 XL Sportsters. The pack contains eight 7/16-inch zinc-plated washers. Use them under the cylinder base nuts to stop the hardware loosening with heat cycles. They back up the clamping load and keep the torque where it belongs.
Manufacturer part number: 8171-8-Z.
Fitment
54 models30-78 OHV & SV Big Twin; 57-86 XL Sportster
FL Shovel 11 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1971–1972 | Electra Glide FL-1200 |
| Harley-Davidson | 1968 | Electra Glide FLB-1200 |
| Harley-Davidson | 1978 | Electra Glide FLH |
| Harley-Davidson | 1978 | Electra Glide FLH 80 FLH-80 |
| Harley-Davidson | 1970–1978 | Electra Glide FLH-1200 |
| Harley-Davidson | 1967–1969 | Electra Glide FLHB-1200 |
| Harley-Davidson | 1975 | Electra Glide FLHF |
| Harley-Davidson | 1977 | Electra Glide FLHS-1200 |
| Harley-Davidson | 1975 | Glide Police FL |
| Harley-Davidson | 1978 | Touring Electra Glide FLH-80 |
| Harley-Davidson | 1977 | Touring Electra Glide Sport FLHS-1200 |
Flathead 5 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1937–1947 | Flathead U-1200 |
| Harley-Davidson | 1938–1946 | Flathead UH-1300 |
| Harley-Davidson | 1938–1943 | Flathead UL-1200 |
| Harley-Davidson | 1937–1948 | Flathead ULH-1300 |
| Harley-Davidson | 1936 | Flathead VL-1200 |
FX Shovel 5 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1976–1978 | FX Super Glide FXE-1200 |
| Harley-Davidson | 1977–1978 | FX Super Glide FXS-1200 |
| Harley-Davidson | 1976–1978 | Super Glide 1200 FX-1200 |
| Harley-Davidson | 1974–1975 | Super Glide FX-1200 |
| Harley-Davidson | 1973 | Super Glide FXE-1200 |
Knucklehead 4 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1936–1948 | Knucklehead E-1000 |
| Harley-Davidson | 1939–1948 | Knucklehead EL-1000 |
| Harley-Davidson | 1937–1946 | Knucklehead F-1200 |
| Harley-Davidson | 1936–1947 | Knucklehead FL-1200 |
Panhead 10 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1958–1959 | Duo Glide FL-1200 |
| Harley-Davidson | 1960–1962 | Duo Glide FLF-1200 |
| Harley-Davidson | 1963–1964 | Duo Glide FLH-1200 |
| Harley-Davidson | 1950 | Hydra Glide E-1000 |
| Harley-Davidson | 1949–1952 | Hydra Glide EL-1000 |
| Harley-Davidson | 1952 | Hydra Glide F-1200 |
| Harley-Davidson | 1949–1957 | Hydra Glide FL-1200 |
| Harley-Davidson | 1953 | Hydra Glide FLEF-1200 |
| Harley-Davidson | 1955 | Hydra Glide FLF-1200 |
| Harley-Davidson | 1956 | Hydra Glide FLH-1200 |
Sportster 19 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1975–1978 | Sportster 1000 XLCH-1000 |
| Harley-Davidson | 1977–1978 | Sportster 1000 XLCR-1000 |
| Harley-Davidson | 1981–1985 | Sportster 1000 XLH |
| Harley-Davidson | 1979–1980 | Sportster 1000 XLH-1000 |
| Harley-Davidson | 1979–1980 | Sportster 1000 XLS-1000 |
| Harley-Davidson | 1977 | Sportster 1000 XLT-1000 |
| Harley-Davidson | 1986 | Sportster 1100 XLH |
| Harley-Davidson | 1986 | Sportster 883 XL883 |
| Harley-Davidson | 1981–1985 | Sportster Roadster 1000 XLS |
| Harley-Davidson | 1984–1985 | Sportster Roadster 1000 XLX |
| Harley-Davidson | 1980 | Sportster Standard XLH |
| Harley-Davidson | 1975–1978 | Sportster Standard XLH-1000 |
| Harley-Davidson | 1957–1959 | Sportster XL-900 |
| Harley-Davidson | 1958 | Sportster XLC-900 |
| Harley-Davidson | 1972–1979 | Sportster XLCH-1000 |
| Harley-Davidson | 1958–1971 | Sportster XLCH-900 |
| Harley-Davidson | 1972–1975 | Sportster XLH-1000 |
| Harley-Davidson | 1958–1972 | Sportster XLH-900 |
| Harley-Davidson | 1983–1984 | Sportster XR-1000 |
Planning other changes? Find your model in the bike customiser.
Related Products
View all →
More from Colony
View all →
Knuckle rocker nuts
Rocker box mount stud kit
Transmission to end (kick) cover stud kit
Mount bolt Linkert carburetor. Standard length
Shifter guide bolt set. Black
Electrical terminal plate
Generator terminal positive screw kit
39mm fork tube plug. Flat Top. Chrome
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.