Go-Ahead Bus Service 43M was a trunk service plying between Punggol Interchange and looping at Serangoon Central, passing through Sengkang East Road, Buangkok MRT, Buangkok Green and Yio Chu Kang Road. It was a route variant of Service 43, introduced under the Bus Service Enhancement Programme (BSEP) and was launched on Sunday, 16 November 2014.
↺ Serangoon Ctrl (Loop)
| Route Overview | ||||||||||||
Route  |
Punggol Bus Interchange ↺ Serangoon Central (Loop) | |||||||||||
| Passed Through | Sengkang East Rd, Sengkang Central, Buangkok Green, Yio Chu Kang Rd | |||||||||||
| Route Length | 19.0 km | |||||||||||
| Travelling Time | 70 mins | |||||||||||
| Operator Information | ||||||||||||
| BCM Route Package | Loyang Bus Package | |||||||||||
| Former Operator | Go Ahead Singapore Pte Ltd (Go-Ahead Singapore) |
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| Former Depot | Loyang Bus Depot | |||||||||||
| Former Fleet | Single-deck & Double-deck buses | |||||||||||
| Operating Hours | ||||||||||||
| Departure Times from Punggol |
Daily | |||||||||||
| 05:50 – 23:05 | ||||||||||||
| Operating Frequency | ||||||||||||
| Loop Service | 6:30am–8.30am | 8.31am–4.59pm | 5.00pm–7.00pm | After 7.00pm | ||||||||
| Weekdays | 9 – 10 mins | 6 – 18 mins | 8 – 11 mins | 13 – 19 mins | ||||||||
| Saturdays | 15 mins | 15 mins | 15 mins | 15 mins | ||||||||
| Sundays / Public Holidays | 15 – 16 mins | 16 mins | 16 mins | 15 – 16 mins | ||||||||
| Fare Information |
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| Fare | Charges regular distance fares |
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Service 43M was a supplementary route of Service 43, duplicating its parent service between Punggol Bus Interchange and Serangoon Central. It relieved demand and improves reliability of bus services for commuters along Service 43’s most crowded stretches of route. It was launched on 16 November 2014.
The service operated daily, serving residential areas around Punggol Way, Sengkang East Road, Sengkang Central, Buangkok Green, Yio Chu Kang Road and Serangoon Central. The service provided better access to key transport nodes such as Punggol and Serangoon Bus Interchanges, Punggol, Buangkok and Serangoon MRT Stations, amenities such as Ren Ci Hospital & Medicare Centre, Serangoon Sports & Recreation Centre and NEX as well as schools such as Hougang Secondary and Hougang Primary.
Short Trip Service 43A, which plied from Buangkok Green to Serangoon Central, was withdrawn after the introduction of 43M due to duplicating sectors. In addition, evening downroutes of Service 43 which started from Serangoon Central to Punggol Interchange were also withdrawn.
While Service 43M serves Boundary Road, it originally skipped the bus stop outside Serangoon Stadium (63149 S’goon Stadium) as its parent Service 43 does not serve that stretch of road. Service 43M was later amended to call at that stop from 24 Jan 2016. All bus stops along Service 43M’s route are also served by Service 43.
Service 43M was withdrawn with the introduction of Service 104 on 26 October 2025 under the LTA’s Bus Connectivity Enhancement Programme (BCEP).
MRT / LRT Stations Served
Route Variants
- Service 43: Punggol Int ↔ Upper East Coast Ter
Daily
- Express Service 43e: Punggol Int ⇆ Marine Parade Rd
Weekday Peak Hours, except Public Holidays
Gallery (Go-Ahead)
Gallery (SBS Transit)
Poster Gallery
Operator History
- 16 Nov 2014 – 3 Sep 2016: SBS Transit Ltd
- 4 Sep 2016 – 25 Oct 2025: Go Ahead Singapore Pte Ltd (formerly known as Go Ahead Loyang Pte Ltd)
Route History
- 2014 (16 Nov): Introduced between Punggol Int and Serangoon Ctrl under LTA’s Bus Service Enhancement Programme (BSEP)
- 2014 (03 Dec): Designated wheelchair-accessible bus service (WAB)
- 2014 (07 Dec): Serves new pair of bus stops before Blk 264 and outside Blk 264A along Punggol Central
- 2015 (30 Aug): Serves new pair of bus stops outside Twin Waterfalls and after TPE along Punggol Way
- 2016 (24 Jan): Serves additional bus stop outside Serangoon Stadium along Boundary Rd
- 2016 (04 Sep): Operations transferred to Go Ahead Loyang Pte Ltd from SBS Transit Ltd
- 2016 (13 Nov): Serves new pair of bus stops opposite Blk 293D and outside Blk 286B along Sengkang East Rd
- 2017 (26 Nov): Serves additional bus stop outside Punggol Stn/Int along Punggol Central
- 2025 (26 Oct): Withdrawn with the introduction of Service 104.
Past Routing
| Year | Route | |
| Direction 1 | Direction 2 | |
| 2014 – 2025 | Punggol Interchange, Punggol Pl, Punggol Ctrl, Punggol Way, Sengkang East Rd, Compassvale Dr, Sengkang Ctrl, Buangkok Dr, Buangkok Green, Yio Chu Kang Rd, Yio Chu Kang Lk, Boundary Rd, Upp Serangoon Rd and Serangoon Ctrl (Loop) | Yio Chu Kang Lk, Yio Chu Kang Rd, Buangkok Green, Buangkok Dr, Sengkang Ctrl, Compassvale Dr, Sengkang East Rd, Punggol Way, Punggol Ctrl, Punggol Pl and Punggol Interchange. |
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If 43M is renumbsred to 104, can amend via Hougang ave 9 and Hougang ave 4 to avoid duplication with 43?
43M was not really renumbered to 104 but was withdrawn with the launch of 104.
Can 43M soon renumbering 104 extend to punggol east? Any trunk bus service can extend to Punggol east in June 2025?
Based on insider info and the many comments on woodleigh and punggol coast ith, 43M will be renumbered into 104 and extended to those 2 ITHs
Feel that it is totally redundant to run a full fleet double deckers on 43M during non peak hours and on weekends, with a full double decker fleet 43 running in place. Instead, LTA should review again and should just reduce 43M operation to weekday peak hours, deploy full single deck fleet there.
43M got 6 duties
5 crossover from 43 and 1 perm split shift Single decker that do full trips