979007 Diaphragm clutch spring
Fits: 98-03 Big Twin; 14-17 103" Twin Cam…
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Specifications
- Brand
- MCS
- Part Number
- 979007
- OEM Reference
- 37871-98A
- Pack Quantity
- Each
- Category
- Clutch Springs
- VAT Rate
- 20%
About This Product
This MCS diaphragm clutch spring is a standard-duty replacement for riders looking to maintain the original factory lever feel and engagement. Measuring 1.8mm thick, it is a direct replacement for OEM 37871-98A. This spring is designed to fit 1998 to 2003 Big Twin models, as well as 2014 to 2017 103-inch Twin Cam A and B engines, excluding those equipped with an Assist and Slip clutch. The diaphragm spring is the heart of your clutch's clamping force; if it becomes fatigued, you will start to experience slipping under load. This MCS unit ensures your clutch pack stays tightly compressed for reliable power transfer.
Manufacturer part number: 979007.
Fitment
66 models98-03 Big Twin; 14-17 103" Twin Cam A/B (Excl. models with A&S clutch)
CVO/Custom 10 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1999 | CVO Dyna Super Glide FXR2 |
| Harley-Davidson | 1999 | CVO Dyna Super Glide FXR3 |
| Harley-Davidson | 2000 | CVO Dyna Super Glide FXR4 |
| Harley-Davidson | 2001 | CVO Dyna Wide Glide FXDWG2 |
| Harley-Davidson | 2002 | CVO Dyna Wide Glide FXDWG3 |
| Harley-Davidson | 2000 | CVO Road Glide FLTRSEI |
| Harley-Davidson | 2001 | CVO Road Glide FLTRSEI2 |
| Harley-Davidson | 2002 | CVO Road King FLHRSEI |
| Harley-Davidson | 2003 | CVO Softail Deuce FXSTDSE |
| Harley-Davidson | 2014 | Road King FLHR |
Dyna 11 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 2016–2017 | Dyna Fat Bob FXDF 103 |
| Harley-Davidson | 1999–2000 | Dyna Glide Convertible FXDS-CONV |
| Harley-Davidson | 1998–2003 | Dyna Low Rider FXDL |
| Harley-Davidson | 2016–2017 | Dyna Low Rider FXDL 103 |
| Harley-Davidson | 1998–2003 | Dyna Super Glide FXD |
| Harley-Davidson | 1999–2003 | Dyna Super Glide Sport FXDX |
| Harley-Davidson | 2001–2003 | Dyna Super Glide T-Sport FXDXT |
| Harley-Davidson | 2016 | Dyna Switchback FLD 103 |
| Harley-Davidson | 1998–2003 | Dyna Wide Glide FXDWG |
| Harley-Davidson | 2016–2017 | Dyna Wide Glide FXDWG 103 |
| Harley-Davidson | 2017 | Low Rider FXDL 103 |
Dyna Police 1 model
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 2001–2003 | Dyna Defender FXDP |
FXR 1 model
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 2000 | FXR Super Glide FXR3 |
Police 3 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 2002–2003 | Electra Glide Standard Police FLHTPI |
| Harley-Davidson | 2002–2003 | Road King Police Escort FLHPEI |
| Harley-Davidson | 2002–2003 | Road King Police FLHPI |
Softail 20 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 2017 | Breakout FXSB |
| Harley-Davidson | 2017 | Deluxe FLSTN |
| Harley-Davidson | 1998–2017 | Fat Boy FLSTF |
| Harley-Davidson | 2001–2003 | Fat Boy FLSTFI |
| Harley-Davidson | 2016–2017 | Fat Boy Lo FLSTFB |
| Harley-Davidson | 1998–2017 | Heritage Softail Classic FLSTC |
| Harley-Davidson | 2001–2003 | Heritage Softail Classic FLSTCI |
| Harley-Davidson | 1998–2003 | Heritage Springer FLSTS |
| Harley-Davidson | 2001–2003 | Heritage Springer FLSTSI |
| Harley-Davidson | 1999–2003 | Night Train FXSTB |
| Harley-Davidson | 2001–2003 | Night Train FXSTBI |
| Harley-Davidson | 2016 | Softail Breakout FXSB |
| Harley-Davidson | 1998–1999 | Softail Custom FXSTC |
| Harley-Davidson | 2016 | Softail Deluxe FLSTN |
| Harley-Davidson | 2000–2003 | Softail Deuce FXSTD |
| Harley-Davidson | 2001–2003 | Softail Deuce FXSTDI |
| Harley-Davidson | 1999–2003 | Softail Standard FXST |
| Harley-Davidson | 2001–2003 | Softail Standard FXSTI |
| Harley-Davidson | 1998–2003 | Springer Softail FXSTS |
| Harley-Davidson | 2001–2003 | Springer Softail FXSTSI |
Super Glide 1 model
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1998–2000 | Dyna Super Glide Convertible FXDS |
Touring 19 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1998–2003 | Electra Glide Classic FLHTC |
| Harley-Davidson | 1998–2003 | Electra Glide Classic FLHTCI |
| Harley-Davidson | 1998–2003 | Electra Glide Standard FLHT |
| Harley-Davidson | 2003 | Electra Glide Standard FLHTI |
| Harley-Davidson | 1998–2003 | Road Glide FLTR |
| Harley-Davidson | 1998–2003 | Road Glide FLTRI |
| Harley-Davidson | 2015–2016 | Road Glide FLTRX |
| Harley-Davidson | 2015–2016 | Road Glide Special FLTRXS |
| Harley-Davidson | 2016 | Road Glide Ultra FLTRU |
| Harley-Davidson | 2014–2016 | Road King Classic FLHRC |
| Harley-Davidson | 1998–2003 | Road King Classic FLHRCI |
| Harley-Davidson | 1998–2016 | Road King FLHR |
| Harley-Davidson | 2000–2003 | Road King FLHRI |
| Harley-Davidson | 2014–2016 | Street Glide FLHX |
| Harley-Davidson | 2014–2016 | Street Glide Special FLHXS |
| Harley-Davidson | 2014–2016 | Ultra Classic FLHTCU |
| Harley-Davidson | 1998–2003 | Ultra Classic FLHTCUI |
| Harley-Davidson | 2014–2016 | Ultra Classic Twin-Cooled FLHTCU |
| Harley-Davidson | 2014–2016 | Ultra Limited FLHTK |
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