RK-3942 Twin Cam RK series Street Metal O.S. air cleaner assy
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
- K&N
- Part Number
- RK-3942
- OEM Reference
- —
- Pack Quantity
- Each
- Category
- Aircleaner Assemblies
- VAT Rate
- 20%
About This Product
K&N RK-Series Street Metal air cleaner assembly for Twin Cam engines. Fits 2013 to 2015 Softail models. Re-uses the stock air cleaner cover. Kit includes a powder-coated aluminium backplate with an internal velocity stack, built-in breathers to replace the stock external units, and an oversized K&N filter element. K&N testing shows horsepower gains across the Twin Cam range. Replaces the stock filter and backplate. All necessary hardware included. Part number 904692.
Manufacturer part number: RK-3942.
Fitment
21 models13-15 Softail
CVO/Custom 2 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 2013–2014 | CVO Softail Breakout FXSBSE |
| Harley-Davidson | 2014–2015 | CVO Softail Deluxe FLSTNSE |
Softail 19 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 2013 | Blackline FXS |
| Harley-Davidson | 2013 | Blackline FXS 103 |
| Harley-Davidson | 2013–2015 | Fat Boy FLSTF |
| Harley-Davidson | 2013–2015 | Fat Boy FLSTF 103 |
| Harley-Davidson | 2013 | Fat Boy Lo Anv FLSTFB |
| Harley-Davidson | 2013 | Fat Boy Lo Anv FLSTFB 103 |
| Harley-Davidson | 2013–2015 | Fat Boy Lo FLSTFB |
| Harley-Davidson | 2013–2015 | Fat Boy Lo FLSTFB 103 |
| Harley-Davidson | 2013 | Heritage Softail Classic Anv FLSTC |
| Harley-Davidson | 2013 | Heritage Softail Classic Anv FLSTC 103 |
| Harley-Davidson | 2013–2015 | Heritage Softail Classic FLSTC |
| Harley-Davidson | 2013–2015 | Heritage Softail Classic FLSTC 103 |
| Harley-Davidson | 2013–2015 | Softail Breakout FXSB |
| Harley-Davidson | 2013–2015 | Softail Breakout FXSB 103 |
| Harley-Davidson | 2013–2015 | Softail Deluxe FLSTN |
| Harley-Davidson | 2013–2015 | Softail Deluxe FLSTN 103 |
| Harley-Davidson | 2013–2015 | Softail Slim FLS |
| Harley-Davidson | 2013–2015 | Softail Slim FLS 103 |
| Harley-Davidson | 2013–2015 | Softail Standard FXST |
Related Products
View all →
MCS
Dragtron star air cleaner assembly. Black
Arlen Ness
Ness, Stage 1 Big Sucker air cleaner kit. 10-Gauge chr
Arlen Ness
Ness, Stage 1 Big Sucker air cleaner kit. 10-Gauge B.
Arlen Ness
Ness, Stage 1 Big Sucker air cleaner kit. 10-Gauge chr
Arlen Ness
Ness, Stage 1 Big Sucker air cleaner kit. 10-Gauge chr
Arlen Ness
Ness, 90° Monster Sucker air cleaner. 10-Gauge
Arlen Ness
Ness, 90° Monster Sucker air cleaner. Beveled
Arlen Ness
Ness, 90° Monster Sucker air cleaner. Deep Cut
More from K&N
View all →
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.