Exmark 109-3678 Caster Ball Bearing for Quest, Radius, Pioneer & More OEM
Replace worn caster components with the genuine Exmark 109-3678 Caster Ball Bearing. This OEM bearing is built to Exmark specifications for proper fit, smooth caster movement, and reliable performance across select Exmark mower and aerator models.
Fits Select Exmark Mowers & Aerators
This caster ball bearing fits select Exmark Aerator, Pioneer, Quest, Radius, Staris, Vertex, and Z-Aerate models. Use the fitment list below to confirm compatibility with your specific model and serial number.
View Complete Fitment List (141 Models)
Aerators
- AERATORS – ARX440CKC24000 – Serial 402082300-408644345
- AERATORS – ARX440GKC24000 – Serial 402082300-404314158
Pioneer
- PIONEER – PNE22KA482 – Serial 920000-999999
- PIONEER – PNE24KA522 – Serial 920000-999999
- PIONEER – PNE651GKA48200 – Serial 315000000-399999999
- PIONEER – PNE651KA482 – Serial 312000000-314999999
- PIONEER – PNE691GKA52200 – Serial 315000000-399999999
- PIONEER – PNE691KA522 – Serial 312000000-314999999
- PIONEER – PNE710GKC48200 – Serial 315000000-315999999
- PIONEER – PNE720GKC52200 – Serial 315000000-315999999
- PIONEER – PNS20KA443 – Serial 920000-999999
- PIONEER – PNS22KA483 – Serial 920000-999999
- PIONEER – PNS24KA523 – Serial 920000-999999
- PIONEER – PNS600KA443 – Serial 312000000-313999999
- PIONEER – PNS651KA483 – Serial 312000000-314999999
- PIONEER – PNS680KC523 – Serial 312000000-313999999
- PIONEER – PNS691KA523 – Serial 314000000-314999999
- PIONEER – PNS710GKC48300 – Serial 315000000-399999999
- PIONEER – PNS710GKC483A4 – Serial 315000000-315999999
- PIONEER – PNS710KC443 – Serial 314000000-314999999
- PIONEER – PNS710KC483 – Serial 314000000-314999999
- PIONEER – PNS720GKC52300 – Serial 315000000-399999999
- PIONEER – PNS720GKC523A4 – Serial 315000000-315999999
- PIONEER – PNS720KC523 – Serial 314000000-314999999
- PIONEER – PNS720KC523SS – Serial 314000000-314999999
- PIONEER – PNS730GKA604A3 – Serial 315000000-399999999
- PIONEER – PNS730KA604 – Serial 314000000-314999999
- PIONEER – PNS740GKC60400 – Serial 315000000-399999999
- PIONEER – PNS740GKC604A4 – Serial 315000000-399999999
- PIONEER – PNS740GKC60RA3 – Serial 315000000-399999999
- PIONEER – PNS740KC604 – Serial 312000000-314999999
- PIONEER – PNS740KC604SS – Serial 312000000-312999999
- PIONEER – PNS740KC604SS – Serial 314000000-314999999
Quest
- QUEST – QSP20BV443 – Serial 850000-919999
- QUEST – QSP20BV483 – Serial 850000-919999
- QUEST – QSP20KAS443 – Serial 850000-919999
- QUEST – QSP20KAS483 – Serial 850000-919999
- QUEST – QSP20KAX443 – Serial 850000-919999
- QUEST – QSP22KAS523 – Serial 850000-919999
- QUEST – QSS708GEM42200 – Serial 315000000-315999999
- QUEST – QSS708GEM50200 – Serial 315000000-315999999
- QUEST – QSS725GKC42200 – Serial 315000000-319999999
- QUEST – QSS725GKC50200 – Serial 315000000-315999999
- QUEST – QST20BE422 – Serial 790000-919999
- QUEST – QST22BE482 – Serial 670000-919999
- QUEST – QST22BE482C – Serial 790000-919999
- QUEST – QST23KC482 – Serial 720000-789999
- QUEST – QST23KC522 – Serial 720000-789999
- QUEST – QST24BE522 – Serial 670000-919999
- QUEST – QST24BE522C – Serial 790000-919999
- QUEST – QT22KA421 – Serial 920000-999999
- QUEST – QT24KA501 – Serial 920000-999999
- QUEST – QTE452CEM42100 – Serial 316000000-402082299
- QUEST – QTE452CEM42200 – Serial 316000000-402082299
- QUEST – QTE651KA421 – Serial 312000000-314999999
- QUEST – QTE691KA501 – Serial 312000000-314999999
- QUEST – QTE708GEM42100 – Serial 315000000-315999999
- QUEST – QTE708GEM42200 – Serial 400000000-402082299
- QUEST – QTE708GEM50200 – Serial 316000000-402082299
- QUEST – QTE708GEM54100 – Serial 315000000-315999999
- QUEST – QTE735KC421 – Serial 314000000-314999999
- QUEST – QTE735KC501 – Serial 314000000-314999999
- QUEST – QTS452CEM34200 – Serial 315000000-402082299
- QUEST – QTS691KA422 – Serial 313000000-314999999
- QUEST – QTS691KA502 – Serial 312000000-314999999
- QUEST – QTS708GEM42200 – Serial 315000000-402082299
- QUEST – QTS708GEM50200 – Serial 315000000-402082299
- QUEST – QTS708GEM60200 – Serial 400000000-402082299
- QUEST – QTS725CKC42200 – Serial 315000000-315999999
- QUEST – QTS725GKC50200 – Serial 315000000-315999999
- QUEST – QZE452CEM42100 – Serial 402082300-404314158
- QUEST – QZE600CKA42200 – Serial 404314159-408644345
- QUEST – QZE702GEM34200 – Serial 404314159-408644345
- QUEST – QZE702GEM42200 – Serial 404314159-408644345
- QUEST – QZE708GEM34200 – Serial 402082300-404314158
- QUEST – QZE708GEM42200 – Serial 402082300-404314158
- QUEST – QZE722GKC42200 – Serial 417930746-420130746
- QUEST – QZE722GKC50200 – Serial 417930746-420130746
- QUEST – QZE725GKC42200 – Serial 408644346-416150475
- QUEST – QZE725GKC50200 – Serial 408644346-416150475
- QUEST – QZS691CKA50200 – Serial 404314159-406294344
- QUEST – QZS708GEM50200 – Serial 402082300-408644345
- QUEST – QZS708GEM54200 – Serial 408644346-416150474
- QUEST – QZS708GEM60200 – Serial 402082300-406294344
- QUEST – QZS724GKC54200 – Serial 417930746
- QUEST – QZS735GKC54200 – Serial 408644346-416150475
- QUEST – QZV060B0242H00 – Serial 416150475-417930746
- QUEST – QZX735GKC48300 – Serial 413950474-416150475
Radius
- RADIUS – RAE691GKA48C00 – Serial 408644346-413950473
- RADIUS – RAE702GEM44300 – Serial 404314159-408644345
- RADIUS – RAE708GEM44300 – Serial 406294345-413950473
- RADIUS – RAE708GEM48300 – Serial 400000000-413950473
- RADIUS – RAE708GEM48C00 – Serial 411294212-413950473
- RADIUS – RAE708GEM52300 – Serial 400000000-413950473
- RADIUS – RAE708GEM60300 – Serial 400000000-413950473
- RADIUS – RAE720CKC48300 – Serial 402082300-413950473
- RADIUS – RAE740CKC60300 – Serial 406294345-411294211
- RADIUS – RAS651GKA483A3 – Serial 408644346-413950473
- RADIUS – RAS651GKA48CA3 – Serial 411294212-413950473
- RADIUS – RAS691GKA523A3 – Serial 408644346-413950473
- RADIUS – RAS708GEM483C3 – Serial 402082300-408644345
- RADIUS – RAS708GEM523C3 – Serial 402082300-408644345
- RADIUS – RAS708GEM603C3 – Serial 402082300-408644345
- RADIUS – RAS708GEM60RC3 – Serial 402082300-408644345
- RADIUS – RAS710CKC48300 – Serial 400000000-402082299
- RADIUS – RAS720CKC52300 – Serial 400000000-402082299
- RADIUS – RAS720GKC52300 – Serial 400000000-402082299
- RADIUS – RAS730GKA603A3 – Serial 408644346-413950473
- RADIUS – RAS730GKA60RA3 – Serial 408644346-413950473
- RADIUS – RAS740CKC60300 – Serial 400000000-402082299
- RADIUS – RAS740GKC60300 – Serial 400000000-402082299
- RADIUS – RAS740GKC60R00 – Serial 400000000-402082299
- RADIUS – RAX651GKA484A3 – Serial 400000000-411294211
- RADIUS – RAX691GKA524A3 – Serial 400000000-411294211
- RADIUS – RAX730GKA604A3 – Serial 400000000-411294211
- RADIUS – RAX921GKA604A3 – Serial 411294212-413950473
- RADIUS – RDE691GKA48200 – Serial 420130747
- RADIUS – RDE691GKA54200 – Serial 420130747
- RADIUS – RDE730GKA60200 – Serial 420130747
- RADIUS – RDS691GKA48CA3 – Serial 420130747-420213157
- RADIUS – RDS691GKA523A3 – Serial 420130747-420192187
- RADIUS – RDS730GKA603A3 – Serial 420130747-420192253
- RADIUS – RDX691GKA524A3 – Serial 420130747
- RADIUS – RDX730GKA604A3 – Serial 420130747
- RADIUS – RZE708GEM48C00 – Serial 413950474-420130746
- RADIUS – RZE708GEM52300 – Serial 413950474-420130746
- RADIUS – RZE708GEM60300 – Serial 413950474-420130746
- RADIUS – RZE724GKC48C00 – Serial 417930746-420130746
- RADIUS – RZE724GKC52300 – Serial 417930746-420130746
- RADIUS – RZE724GKC60300 – Serial 417930746-420130746
- RADIUS – RZS651GKA48CA3 – Serial 413950474-420130746
- RADIUS – RZS691GKA523A3 – Serial 413950474-420130746
- RADIUS – RZS730GKA603A3 – Serial 413950474-420130746
Staris
- STARIS – STE600CKA32300 – Serial 404314159-408644345
- STARIS – STE600CKA323H1 – Serial 408644346-413950474
- STARIS – STE600CKA36300 – Serial 404314159-406294344
- STARIS – STE600CKA363H1 – Serial 406294345-413950474
- STARIS – STE600GKA36300 – Serial 406294345-408644345
- STARIS – STE600GKA44300 – Serial 404314159-406294344
Vertex
- VERTEX – VXE600GKA32300 – Serial 416150475-420130746
- VERTEX – VXE600GKA36300 – Serial 416150475-417930746
Z-Aerate
- Z-AERATE – ZA3624 – Serial 408644346-420130746
Exmark Caster Ball Bearing Replacement
The Exmark 109-3678 Caster Ball Bearing is a genuine OEM replacement designed for select Exmark mower and aerator caster assemblies. A properly functioning caster bearing helps support smooth turning, stable handling, and reliable operation.
Product Details
- Genuine Exmark OEM Caster Ball Bearing
- Part Number: 109-3678
- Description: Caster Ball Bearing PNS
- Designed for select Exmark mower and aerator models
- Helps support smooth caster movement and maneuverability
- Direct replacement for compatible factory-installed caster bearings
- Built to Exmark specifications for fit and performance
Why Choose Genuine Exmark OEM Caster Bearings?
Genuine Exmark caster bearings are engineered to meet the fit, load, and durability requirements of your equipment. OEM replacement parts help maintain smooth operation and reduce the risk of premature wear caused by incorrect fit or lower-quality alternatives.
The genuine Exmark 109-3678 Caster Ball Bearing is designed to keep your Exmark equipment operating the way it was intended.
Important: Fitment can vary by serial number. Always verify your model and serial number before ordering. If you need assistance confirming compatibility, contact our team and we'll be happy to help.
Genuine Exmark Parts
Genuine Exmark OEM parts are built for commercial performance. Engineered to factory specifications, they deliver precise fit, long lasting durability, and the reliability professionals depend on. Protect your investment and minimize downtime with parts designed specifically for your Exmark machine.
Get Everything You Need
View the complete parts diagram for your machine. Find related maintenance items, replacement parts, and hardware before placing your order.
