# Service bulletin PAB1165

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 11016842
- Published by NHTSA: 2025\-04\-08
- Manufacturer's number: PAB1165
- Manufacturer's date: 2025\-03\-29
- NHTSA component: ENGINE; UNKNOWN OR OTHER

## NHTSA's summary

GENUINE MOTOR PARTS AND MOTOR ACCESSORIES BULLETIN PAB1165 \(REV A\): H\-D SYN3 SAE 15W50 / SAE 50 AVAILABILITY. PURPOSE: Revision \(A\) \* Updated: Summary, Update table. This bulletin informs of the availability of the SYN3 New Improved Formula, a dual weight SAE 15W50 / SAE 50 Motorcycle Oil. The new formula transitions into inventory as the old SYN3 20W50 product inventory is depleted. Availability varies by SKU and region. The original SYN3 20W50 will be obsoleted when the transition is complete.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11016842-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11016842-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Engine

## Vehicles listed

- 2017 to 2020 HARLEY\-DAVIDSON FLDE
- 2018 to 2019 HARLEY\-DAVIDSON FLFB
- 2018 to 2024 HARLEY\-DAVIDSON FLFBS
- 2018 HARLEY\-DAVIDSON FLFBS ANV
- 2018 HARLEY\-DAVIDSON FLFBS ANX
- 2020 HARLEY\-DAVIDSON FLFBSANV
- 2023 HARLEY\-DAVIDSON FLFBSANV
- 2021 HARLEY\-DAVIDSON FLH
- 2017 to 2021 HARLEY\-DAVIDSON FLHC
- 2018 to 2024 HARLEY\-DAVIDSON FLHCS
- 2018 HARLEY\-DAVIDSON FLHCS ANV
- 2023 HARLEY\-DAVIDSON FLHCS ANV
- 2023 HARLEY\-DAVIDSON FLHFB
- 2017 to 2024 HARLEY\-DAVIDSON FLHP
- 2017 to 2022 HARLEY\-DAVIDSON FLHR
- 2017 to 2024 HARLEY\-DAVIDSON FLHRXS
- 2019 to 2022 HARLEY\-DAVIDSON FLHT
- 2017 to 2019 HARLEY\-DAVIDSON FLHTCU
- 2017 HARLEY\-DAVIDSON FLHTCUL
- 2017 HARLEY\-DAVIDSON FLHTCUTC
- 2017 to 2024 HARLEY\-DAVIDSON FLHTCUTG
- 2018 HARLEY\-DAVIDSON FLHTCUTG ANV
- 2023 HARLEY\-DAVIDSON FLHTCUTGANV
- 2019 to 2022 HARLEY\-DAVIDSON FLHTCUTGSE
- 2017 to 2024 HARLEY\-DAVIDSON FLHTK
- 2018 HARLEY\-DAVIDSON FLHTK ANV
- 2020 to 2023 HARLEY\-DAVIDSON FLHTK SHRINE
- 2023 HARLEY\-DAVIDSON FLHTKANV
- 2017 to 2019 HARLEY\-DAVIDSON FLHTKL
- 2017 to 2021 HARLEY\-DAVIDSON FLHTKSE
- 2018 HARLEY\-DAVIDSON FLHTKSE ANV
- 2017 to 2024 HARLEY\-DAVIDSON FLHTP
- 2017 to 2024 HARLEY\-DAVIDSON FLHX
- 2018 HARLEY\-DAVIDSON FLHX ANV
- 2018 HARLEY\-DAVIDSON FLHX ANX
- 2017 to 2023 HARLEY\-DAVIDSON FLHXS
- 2023 HARLEY\-DAVIDSON FLHXSANV
- 2017 to 2024 HARLEY\-DAVIDSON FLHXSE
- 2022 to 2023 HARLEY\-DAVIDSON FLHXST
- 2024 HARLEY\-DAVIDSON FLI
- 2017 to 2024 HARLEY\-DAVIDSON FLRT
- 2017 HARLEY\-DAVIDSON FLS
- 2018 to 2022 HARLEY\-DAVIDSON FLSB
- 2024 HARLEY\-DAVIDSON FLSB
- 2018 to 2021 HARLEY\-DAVIDSON FLSL
- 2017 HARLEY\-DAVIDSON FLSS
- 2017 HARLEY\-DAVIDSON FLSTC
- 2017 HARLEY\-DAVIDSON FLSTF
- 2017 HARLEY\-DAVIDSON FLSTFB
- 2017 HARLEY\-DAVIDSON FLSTFBS
- 2017 HARLEY\-DAVIDSON FLSTN
- 2020 to 2024 HARLEY\-DAVIDSON FLTRK
- 2022 HARLEY\-DAVIDSON FLTRKSE
- 2023 HARLEY\-DAVIDSON FLTRKSE ANV
- 2023 to 2024 HARLEY\-DAVIDSON FLTRT
- 2017 to 2019 HARLEY\-DAVIDSON FLTRU
- 2017 to 2024 HARLEY\-DAVIDSON FLTRX
- 2024 HARLEY\-DAVIDSON FLTRXP
- 2017 to 2023 HARLEY\-DAVIDSON FLTRXS
- 2023 HARLEY\-DAVIDSON FLTRXSANV
- 2018 to 2024 HARLEY\-DAVIDSON FLTRXSE
- 2022 to 2023 HARLEY\-DAVIDSON FLTRXST
- 2023 to 2024 HARLEY\-DAVIDSON FLTRXSTSE
- 2018 to 2020 HARLEY\-DAVIDSON FXBB
- 2021 to 2024 HARLEY\-DAVIDSON FXBBS
- 2018 to 2019 HARLEY\-DAVIDSON FXBR
- 2023 to 2024 HARLEY\-DAVIDSON FXBR
- 2018 to 2020 HARLEY\-DAVIDSON FXBRS
- 2022 to 2023 HARLEY\-DAVIDSON FXBRS
- 2018 HARLEY\-DAVIDSON FXBRS ANX
- 2017 to 2018 HARLEY\-DAVIDSON FXDB
- 2017 HARLEY\-DAVIDSON FXDBP 103
- 2017 HARLEY\-DAVIDSON FXDF
- 2017 HARLEY\-DAVIDSON FXDL
- 2017 HARLEY\-DAVIDSON FXDLS
- 2019 to 2020 HARLEY\-DAVIDSON FXDRS
- 2017 HARLEY\-DAVIDSON FXDWG
- 2018 to 2019 HARLEY\-DAVIDSON FXFB
- 2018 to 2024 HARLEY\-DAVIDSON FXFBS
- 2018 to 2020 HARLEY\-DAVIDSON FXLR
- 2020 to 2024 HARLEY\-DAVIDSON FXLRS
- 2022 to 2024 HARLEY\-DAVIDSON FXLRST
- 2022 HARLEY\-DAVIDSON FXRST
- 2017 to 2018 HARLEY\-DAVIDSON FXSB
- 2017 HARLEY\-DAVIDSON FXSE
- 2020 to 2024 HARLEY\-DAVIDSON FXST
- 2021 to 2023 HARLEY\-DAVIDSON RA1250
- 2021 to 2024 HARLEY\-DAVIDSON RA1250S
- 2024 HARLEY\-DAVIDSON RA1250SE
- 2022 HARLEY\-DAVIDSON RA975S
- 2021 to 2024 HARLEY\-DAVIDSON RH1250S
- 2022 to 2024 HARLEY\-DAVIDSON RH975
- 2023 to 2024 HARLEY\-DAVIDSON RH975S
- 2017 to 2020 HARLEY\-DAVIDSON XL1200C
- 2017 to 2021 HARLEY\-DAVIDSON XL1200CX
- 2018 to 2021 HARLEY\-DAVIDSON XL1200NS
- 2017 HARLEY\-DAVIDSON XL1200T
- 2020 HARLEY\-DAVIDSON XL1200T
- 2017 to 2022 HARLEY\-DAVIDSON XL1200X
- 2018 HARLEY\-DAVIDSON XL1200X ANX
- 2018 to 2020 HARLEY\-DAVIDSON XL1200XS
- 2017 to 2021 HARLEY\-DAVIDSON XL883L
- 2017 to 2022 HARLEY\-DAVIDSON XL883N
- 2021 HARLEY\-DAVIDSON duplicate productRA1250

JSON: [/v1/bulletins/11016842](/v1/bulletins/11016842)

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