Exmark 103-6391-S 16.25 Inch Mulching Blade OEM
Improve grass-clipping reduction and mulching performance with the genuine Exmark 103-6391-S Mulching Blade. This 16.25-inch OEM blade features a 15/16-inch center hole and is designed to recirculate clippings beneath the mower deck, cutting them into smaller pieces before forcing them down into the turf. It performs especially well with compatible Exmark Micro Mulch Kits and on lush, regularly maintained Northern and Southern grasses.
Fits Select Exmark Zero-Turn and Walk-Behind Mowers
This OEM mulching blade fits select Exmark Lazer Z, Metro, Pioneer, Quest, Radius, Staris, Turf Tracer, Vantage, and Vertex models. Use the fitment list below to verify compatibility with your specific model and serial number.
View Complete Fitment List (137 Models)
Lazer Z
- LAZER Z – LCT18BV483 – Serial 600000-789999
- LAZER Z – LCT21BV523 – Serial 600000-789999
- LAZER Z – LCT23BV523 – Serial 720000-789999
- LAZER Z – LCT23BV603 – Serial 600000-789999
- LAZER Z – LCT4418BV – Serial 540000-599999
- LAZER Z – LCT5218BV – Serial 540000-599999
- LAZER Z – LHP4419KA – Serial 540000-599999
- LAZER Z – LHP4819KA – Serial 540000-599999
- LAZER Z – LHP4820KC – Serial 540000-599999
- LAZER Z – LHP4823KA – Serial 540000-599999
- LAZER Z – LHP5220KC – Serial 540000-599999
- LAZER Z – LHP5223KA – Serial 540000-599999
- LAZER Z – LHP5223KC – Serial 540000-599999
- LAZER Z – LZA20KAS484 – Serial 850000-919999
- LAZER Z – LZA20KAX484 – Serial 850000-919999
- LAZER Z – LZA20KAX524 – Serial 850000-919999
- LAZER Z – LZA27KC604 – Serial 820000-919999
- LAZER Z – LZAS20BV484 – Serial 790000-849999
- LAZER Z – LZAS20KC484 – Serial 790000-849999
- LAZER Z – LZAS22KA484 – Serial 850000-919999
- LAZER Z – LZAS22KA484CA – Serial 850000-919999
- LAZER Z – LZAS23KC524 – Serial 790000-919999
- LAZER Z – LZAS25KC604 – Serial 790000-919999
- LAZER Z – LZAS26LKA604 – Serial 790000-919999
- LAZER Z – LZAS27KC524 – Serial 790000-919999
- LAZER Z – LZAS27KC524CA – Serial 850000-919999
- LAZER Z – LZAS27KC604 – Serial 790000-919999
- LAZER Z – LZAS27KC604CA – Serial 820000-919999
- LAZER Z – LZAS29KA724 – Serial 790000-919999
- LAZER Z – LZE20KA484 – Serial 920000-999999
- LAZER Z – LZE22KA484 – Serial 920000-999999
- LAZER Z – LZE600GKA484A2 – Serial 315000000-315999999
- LAZER Z – LZE600KA484 – Serial 312000000-314999999
- LAZER Z – LZE651CKA484A2 – Serial 406294345-416150474
- LAZER Z – LZE651GKA484A2 – Serial 316000000-408644345 and 416150475-417930745
- LAZER Z – LZS22KA484 – Serial 920000-999999
- LAZER Z – LZS22KA484CA – Serial 920000-999999
- LAZER Z – LZS651CKA484A2 – Serial 315000000-316999999 and 400000000-407114159
- LAZER Z – LZS651KA484 – Serial 312000000-314999999
- LAZER Z – LZS651KA484CA – Serial 312000000-312999999
- LAZER Z – LZX23KC486 – Serial 920000-999999
- LAZER Z – LZX680KC486 – Serial 312000000-312999999
- LAZER Z – LZZ23KA526 – Serial 790000-849999
- LAZER Z – LZZ23KC486 – Serial 790000-919999
- LAZER Z – LZZ23KC526 – Serial 790000-919999
- LAZER Z – LZZ24KA526 – Serial 850000-919999
- LAZER Z – LZZ24KA526CA – Serial 850000-919999
- LAZER Z – LZZ27KC526 – Serial 790000-919999
- LAZER Z – LZZ27KC526CA – Serial 850000-919999
- LAZER Z – LZZ27KC606 – Serial 790000-919999
- LAZER Z – LZZ27KC606CA – Serial 850000-919999
- LAZER Z – LZZ29KA606 – Serial 790000-919999
- LAZER Z – LZZ29KCE606 – Serial 850000-919999
- LAZER Z – LZZ34KA606 – Serial 790000-919999
- LAZER Z – LZZ34KA726 – Serial 790000-919999
- LAZER Z – LZZ34KC606 – Serial 850000-919999
- LAZER Z – LZZ34KC726 – Serial 850000-919999
- LAZER Z – LZZ38KC606 – Serial 850000-919999
- LAZER Z – LZZ38KC726 – Serial 850000-919999
Metro
- METRO – MHP3615KAC – Serial 540000-599999
- METRO – MHP4815KAC – Serial 540000-599999
Pioneer
- PIONEER – PNS22KA483 – Serial 920000-999999
- PIONEER – PNS651KA483 – Serial 312000000-314999999
- PIONEER – PNS710GKC48300 – Serial 315000000-399999999
- PIONEER – PNS710GKC483A4 – Serial 315000000-315999999
- PIONEER – PNS710KC483 – Serial 314000000-314999999
Quest
- QUEST – QZX735GKC48300 – Serial 413950474-416150475
Radius
- RADIUS – RAE708GEM48300 – Serial 400000000-413950473
- RADIUS – RAE720CKC48300 – Serial 402082300-413950473
- RADIUS – RAS651GKA483A3 – Serial 408644346-413950473
- RADIUS – RAS708GEM483C3 – Serial 402082300-408644345
- RADIUS – RAS710CKC48300 – Serial 400000000-402082299
- RADIUS – RAX651GKA484A3 – Serial 400000000-411294211
Staris
- STARIS – STE600CKA32300 – Serial 404314159-408644345
- STARIS – STE600CKA323H1 – Serial 408644346-413950474
- STARIS – STS650AKC48400 – Serial 404314159-411294211
- STARIS – STS651GKA48400 – Serial 404314159-411294211
Turf Tracer
- TURF TRACER – THP15KA363 – Serial 600000-849999
- TURF TRACER – THP16KA363 – Serial 850000-919999
- TURF TRACER – THP16KA363CA – Serial 850000-919999
- TURF TRACER – THP16KA483 – Serial 850000-919999
- TURF TRACER – THP16KA483CA – Serial 850000-919999
- TURF TRACER – THP17KA363CA – Serial 790000-849999
- TURF TRACER – THP17KA483 – Serial 600000-849999
- TURF TRACER – THP17KA483CA – Serial 790000-849999
- TURF TRACER – THP17KA523 – Serial 600000-849999
- TURF TRACER – THP17KA523CA – Serial 790000-849999
- TURF TRACER – THP18KA523 – Serial 850000-919999
- TURF TRACER – THP19KAE483 – Serial 600000-849999
- TURF TRACER – THP19KAE483CA – Serial 790000-849999
- TURF TRACER – THP19KAE523 – Serial 600000-849999
- TURF TRACER – THP20KAE483 – Serial 850000-919999
- TURF TRACER – THP20KAE483CA – Serial 850000-919999
- TURF TRACER – THP20KAE523 – Serial 850000-919999
- TURF TRACER – TT3615KAC – Serial 540000-599999
- TURF TRACER – TT4817KAC – Serial 540000-599999
- TURF TRACER – TT4819KAC – Serial 540000-599999
- TURF TRACER – TT4819KAEC – Serial 540000-599999
- TURF TRACER – TT5219KAC – Serial 540000-599999
- TURF TRACER – TT5219KAEC – Serial 540000-599999
- TURF TRACER – TTS16KA483 – Serial 920000-999999
- TURF TRACER – TTS16KA483CA – Serial 920000-999999
- TURF TRACER – TTS20KAE483 – Serial 920000-999999
- TURF TRACER – TTS20KAE483CA – Serial 920000-999999
- TURF TRACER – TTS20PKAE483 – Serial 920000-999999
- TURF TRACER – TTS481GKA48300 – Serial 315000000-416150474
- TURF TRACER – TTS481GKA483N0 – Serial 416150475-420130746
- TURF TRACER – TTS481KA483 – Serial 312000000-314999999
- TURF TRACER – TTS541CKA48300 – Serial 315000000-413950473
- TURF TRACER – TTS541KA483CA – Serial 312000000-314999999
- TURF TRACER – TTS600CKA483E0 – Serial 413950474-416150474
- TURF TRACER – TTS600GKA483E0 – Serial 315000000-413950473 and 416150475-420130747
- TURF TRACER – TTS600KAE483 – Serial 312000000-314999999
- TURF TRACER – TTS600PKAE483 – Serial 312000000-312999999
- TURF TRACER – TTS680PKC483E0 – Serial 315000000-408644345
- TURF TRACER – TTS680PKCE483 – Serial 313000000-314999999
Vantage
- VANTAGE – VT20KA484 – Serial 920000-999999
- VANTAGE – VT20KAS484 – Serial 850000-919999
- VANTAGE – VT20KAS524 – Serial 850000-919999
- VANTAGE – VT24KA484 – Serial 920000-999999
- VANTAGE – VT24KA484CA – Serial 920000-999999
- VANTAGE – VT24KAS484 – Serial 850000-919999
- VANTAGE – VT24KAS484CA – Serial 850000-919999
- VANTAGE – VT24KAS524 – Serial 850000-919999
- VANTAGE – VT24KAS524CA – Serial 850000-919999
- VANTAGE – VT651KA484 – Serial 312000000-312999999
- VANTAGE – VT691KA484CA – Serial 312000000-312999999
- VANTAGE – VTS651KA484 – Serial 313000000-313999999
- VANTAGE – VTS691CKA48400 – Serial 315000000-404314158
- VANTAGE – VTS691KA484CA – Serial 313000000-314999999
- VANTAGE – VTX651GKA48400 – Serial 315000000-499999999
- VANTAGE – VTX651KA484 – Serial 313000000-314999999
Vertex
- VERTEX – VXE600GKA32300 – Serial 416150475-420130746
- VERTEX – VXS730GKA48400 – Serial 411294212-420130747
- VERTEX – VXS740AKC48400 – Serial 413950474-416150474
- VERTEX – VXS740EKC48400 – Serial 416150475-420130746
- VERTEX – VXS750AKC48400 – Serial 416150475-420130747
Exmark 16.25 Inch Micro Mulch Blade Replacement
The Exmark 103-6391-S is a genuine OEM 16.25-inch mulching blade with a 15/16-inch center hole. It is designed to reduce grass-clipping size and direct the finely cut material down into the turf. For optimal mulching performance, use this blade with the compatible Exmark Micro Mulch Kit specified for your mower.
Compatible 48-inch mower decks commonly use three blades. This listing is for one individual blade unless the product quantity states otherwise.
Product Details
- Genuine Exmark OEM Mulching Blade
- Part Number: 103-6391-S
- Blade Length: 16.25 Inches
- Center Hole: 15/16 Inch
- Designed for grass-mulching applications
- Works best with a compatible Exmark Micro Mulch Kit
- Reduces grass clippings into smaller pieces
- Directs finely cut clippings down into the turf
- Suitable for lush, well-maintained Northern and Southern grasses
- Can help reduce clumping during side-discharge mowing
- Can help reduce streaking and improve cut consistency
- Built to Exmark factory specifications
- Sold individually unless otherwise stated
Mulching Performance for Maintained Turf
The Exmark 103-6391-S uses an aggressive mulching profile to generate the airflow needed to keep clippings circulating through the cutting chamber. This allows the blade to cut the material repeatedly before directing the smaller clippings back into the turf.
This increased airflow and recutting action requires more engine horsepower than a standard low-lift blade. It is best suited for lush, regularly maintained turf where the mower is removing a manageable amount of grass during each pass.
Why Choose Genuine Exmark OEM Mulching Blades?
Genuine Exmark blades are engineered to provide the correct length, center-hole size, cutting profile, balance, and deck clearance for compatible Exmark equipment. Using the proper OEM mulching blade helps the mower deck and Micro Mulch Kit deliver their intended airflow and clipping-reduction performance.
Important: Verify your model, serial number, deck configuration, center-hole size, and required blade quantity before ordering. Exmark frequently uses different blades across similar mower models and deck sizes, and fitment can vary by serial number.
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.
