Riding mower · Troy-Bilt Bronco 42 / Bronco 46

Troy-Bilt 13A878BSA23, 13A878BT066 and 13A878BTA66 parts: blades, deck belt, spark plug, air filter, oil filter and fuel filter

Checked October 5, 2026 · From the manufacturer's operator's manual and parts list

547 cc

Your model

Fits 13A878BSA23, 13A878BT066 (46 in deck) and 13A878BTA66. Where a part differs, the row names the model.

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Parts for the Troy-Bilt 13A878BSA23, 13A878BT066 and 13A878BTA66

Part	Number and size	Buy
Blade13A878BSA23, 13A878BTA66	Not confirmed
Blade13A878BT066	MTD `942-04290A` part details Replaces 942-04290, 942-04244A	Search Amazon for 942-04290A
Deck belt13A878BSA23, 13A878BTA66	Not confirmed
Deck belt13A878BT066	MTD `954-04219` part details	Search Amazon for 954-04219
Oil filter	MTD `951-12690` part details	Search Amazon for 951-12690
Air filter	MTD `937-05066` part details	Search Amazon for 937-05066
Spark plug	MTD `951-10292A` part details Replaces 951-10292	Shop
Fuel filter	MTD `951-3013` part details	Search Amazon for 951-3013

Checked October 5, 2026 · 22 sources

Engine: MTD 547 cc OHV vertical shaft

Displacement: 547 cc
Oil filter: MTD 951-12690
Spark plug: MTD 951-10292A
Air filter: MTD 937-05066
Fuel filter: MTD 951-3013

Where's my model number?

Under the seat pan; lift up the seat to see it

Other machines that use these parts (65)

Troy-Bilt TB2246 blade and deck belt
Cub Cadet LTX 1046 M / LTX 1045 blade and deck belt
Cub Cadet XT2-LX46 KW blade
Cub Cadet XT1-LT46 FAB / XT2-LX46 KH blade
Cub Cadet XT1 LT46 with IntelliPower / XT1 LT42 with IntelliPower and others oil filter, air filter, spark plug and fuel filter
Cub Cadet XT1 LT46 blade
Troy-Bilt Bronco 46K blade and deck belt
Troy-Bilt Super Bronco 46 / Super Bronco XP 54 / Super Bronco 50 XP oil filter and spark plug
Troy-Bilt Super Bronco 46 XP FAB / Super Bronco 46K FAB XP and others blade
Cub Cadet ZT1 46 / ZT1 42 blade
Cub Cadet XT1-LT46 KH / XT2-LX46 KH blade
Cub Cadet XT1 LT42 IntelliPOWER / XT1 LT46 INTELLIPOWER oil filter, air filter, spark plug and fuel filter
Troy-Bilt Super Bronco / Pony 42 and others oil filter, spark plug and fuel filter
Troy-Bilt Super Bronco 42 XP oil filter, air filter, spark plug and fuel filter
Cub Cadet XT2 LX42 / XT2 LX46 oil filter and spark plug
Troy-Bilt Storm 2690 XP / Storm 2690 and others spark plug
Cub Cadet 2X 24" HP / 2X 524 SWE and others spark plug
Craftsman 24 in. Snow Thrower / 26 in. Snow Thrower spark plug
Craftsman 28 in. Snow Thrower / 30 in. Snow Thrower spark plug
Troy-Bilt Vortex 2610 / Vortex 2890 / Vortex Tracker 2890 XP spark plug
Troy-Bilt Storm 3090 / Vortex 2490 spark plug
Troy-Bilt Storm 2460 spark plug
Cub Cadet 3X 24" / 3X 24" HD and others spark plug
Yard-Man Two-Stage Snow Thrower spark plug
Troy-Bilt Storm Tracker 2890 / Arctic Storm 30 and others spark plug
Craftsman 22 in. Snow Thrower spark plug
Craftsman 33 in. Snow Thrower spark plug
Yard Machines Two-Stage Snow Thrower / 600 Series Snow Thrower spark plug
MTD Gold Two-Stage Snow Thrower spark plug
MTD Gold Two-Stage Snow Thrower / 600 Series Snow Thrower spark plug
Cub Cadet 3X 24" / 3X 24" HD and others spark plug
Cub Cadet 2X 526 SWE / 2X 28" HP and others spark plug
Troy-Bilt Vortex 2895 XP / Storm Tracker 2890 / Storm 2890 spark plug
Troy-Bilt Storm 2890 / Vortex 2490 and others spark plug
Cub Cadet 2X 26" HD IntelliPOWER / 2X 28" IntelliPOWER and others spark plug
Cub Cadet 3X 26" HD / 3X 30" HD and others spark plug
Troy-Bilt Vortex 2490 / Storm 2625 and others spark plug
Cub Cadet 2X 30" TRAC / 3X 30" TRAC / 3X 30" TRAC IntelliPOWER spark plug
Cub Cadet 2X 30" HP / 2X 30" IntelliPOWER EFI and others spark plug
Troy-Bilt Polar Blast 3310XP / Polar Blast 3310 / Polar Blast 4510 spark plug
MTD Pro Two-Stage Snow Thrower spark plug
Cub Cadet SC 500 Z / SC 500 HW and others spark plug
Cub Cadet 3X 26" TRAC / 3X 30" TRAC spark plug
Huskee 600 Series Snow Thrower / Two-Stage Snow Thrower spark plug
Cub Cadet 3X 30" PRO / 3X 34" PRO / 3X 30" MAX spark plug
Cub Cadet 3X 30" PRO H / 3X 34" PRO H / 3X 34" MAX H spark plug
Cub Cadet 3X 30" MAX IntelliPOWER EFI spark plug
Cub Cadet 930 SWE / 933 SWE / 945 SWE spark plug
Cub Cadet 3X 34" MAX H IntelliPOWER EFI spark plug
Troy-Bilt Vortex Tracker 2890 spark plug
Yard Machines 600 Series Snow Thrower / Two-Stage Snow Thrower spark plug
Yard Machines Two-Stage Snow Thrower spark plug
Remington Two-Stage Snow Thrower spark plug
Remington Two-Stage Snow Thrower spark plug
MTD Two-Stage Snow Thrower spark plug
Yard Machines Two-Stage Snow Thrower spark plug
Columbia Two-Stage Snow Thrower / Three-Stage Snow Thrower / Heavy Duty Three Stage Snow Thrower spark plug
Columbia Two-Stage Snow Thrower spark plug
Columbia Three Stage Track Snow Thrower spark plug
Columbia Two-Stage Snow Thrower spark plug
Columbia Two-Stage Snow Thrower spark plug
Columbia Three-Stage Snow Thrower / Two-Stage Snow Thrower spark plug
Columbia Three-Stage Snow Thrower spark plug
Troy-Bilt TB 340 spark plug
Cub Cadet CC 600 spark plug

Where these numbers come from (22 sources)

Every part number above is printed in at least two of these. Checked October 5, 2026. How we check parts.

Parts list · PartsTree (dealer copy of MTD IPL) · 2024 variant
Details
Troy-Bilt 13A878BSA23 (2024) IPL .Quick Reference: engine rows Air Filter 937-05066 'AIR FILTER W/PREFILTER', Oil Filter 951-12690 'ENGINE OIL FILTER', Fuel Filter 951-3013 'FUEL FILTER', Spark Plug 951-10292A 'SPARK PLUG (F6RTC/RN11YC/BPR6ES)'; also prints Belt (Deck Spindle) 954-04060C 'V-BELT A SEC x 96.5', Blades 942-04308A '21.23" BLADE (2N1)', Belt (Lower Drive) 954-0467A 'V-BELT 5L-90.93', Belt (Upper Drive) 954-04208A 'V-BELT 5L x 40.75' (machine parts not stored: no listed document prints them) (used for machine and part numbers)
Parts list · PartsTree (dealer copy of MTD IPL) · 2024 variant
Details
Troy-Bilt 13A878BSA23 (2024) IPL Label Map: 777D28798 'LABEL-42 INCH DECK TROY-BILT'; 777D31859 'LABEL-TROY BILT 547CC OHV S.E.T. LT5' (used for machine and part numbers)
Parts list · PartsTree (dealer copy of MTD IPL) · 2024 variant
Details
Troy-Bilt 13A878BSA23 (2024) IPL Engine Accessories: 951-3013 'FUEL FILTER', 490-202-M002 'Genuine Factory Parts FUEL FILTER' (used for machine and part numbers)
Engine manual 769-27027 · MTD Products · August 29, 2024
Details
Operator's Manual, 547 cc OHV Vertical Shaft Engines (Form No. 769-27027, August 29, 2024); p1 cover; p14 Replacement Parts: '951-10292A Spark Plug', '937-05066 Air Filter Assembly (Includes Pre-Filter)', '951-3013 Fuel Filter (for use without fuel pump)', '951-22912 Fuel Filter (for use with fuel pump)', '951-12690 Oil Filter' (engine manual listed for this plate on troybilt.com) (used for machine and part numbers, engine)
Operator's manual 769-26990 · MTD Products · September 5, 2024
Details
Operator's Manual, Front Engine Lawn Tractor (Form No. 769-26990, September 5, 2024); p1 'Record Product Information': 'You can locate the model plate by lifting up the seat and looking under the seat pan.' (used for machine and part numbers)
Maker's model page · Troy-Bilt LLC
Details
troybilt.com model page 13A878BSA23 (heading 'Bronco 42 Riding Lawn Mower'; description 'MOWER: LT5 42SD CVT TB'; engine text '547cc Troy-Bilt® engine designed for smooth, responsive performance and rugged durability'; manuals listed 769-26804, 769-26892, 769-26893, 769-26990, 769-27027), retrieved 2026-10-05 (ruling 1: ties the plate to its manuals and engine only) (used for machine and part numbers)
Operator's manual 769-17291B · Troy-Bilt LLC · November 4, 2019
Details
Parts/Warranty Supplement, Troy-Bilt Tuffy/Pony, Bronco, TB46 Automatic, Horse, TB42 Hydro (Form No. 769-17291B, November 4, 2019); p1 Replacement Parts; '954-04219 Deck Belt (46” Mowing Deck)', '942-04290 Blade (46” Mowing Deck)', '734-04240A Tire (Front) 15 x 6 x 6 Round Shoulder', '734-04241 Tire (Rear) 20 x 8 x 8 Round Shoulder' (also square-shoulder 734-1731 / 734-1730) (used for machine and part numbers)
Parts list · PartsTree (dealer copy of MTD IPL) · 2020 variant
Details
Troy-Bilt 13A878BT066 (2020) IPL .Quick Reference: 954-04219 'Belt (Deck Spindle)'; 942-04290A (Deck page: 942-04290 superseded to 942-04290A) 'Blades'; 547cc engine parts 951-10292 (superseded to 951-10292A), 937-05066, 951-12690, 951-3013 (used for machine and part numbers)
Parts list · PartsTree (dealer copy of MTD IPL) · 2020 variant
Details
Troy-Bilt 13A878BT066 (2020) IPL Label Map: 777D31838 'LABEL-TROY BILT 547CC OHV LT5' (used for machine and part numbers)
Parts list · PartsTree (dealer copy of MTD IPL) · 2020 variant
Details
Troy-Bilt 13A878BT066 (2020) IPL Wheels (Front) and Wheels (Rear): 'WHEEL ASSEMBLY (15 x 6 x 6)', 'WHEEL ASSEMBLY (20 x 8 x 8)' (rear page wheels-rear-29) (used for machine and part numbers)
Operator's manual 769-21130B · MTD Products · May 7, 2020
Details
Operator's Manual, Front Engine Lawn Tractor (Form No. 769-21130B, May 7, 2020); p1 Record Product Information: 'You can locate the model plate by lifting up the seat and looking under the seat pan.' (used for machine and part numbers)
Maker's model page · Troy-Bilt LLC
Details
troybilt.com prior-year model page 13A878BT066 (heading 'Bronco™ 46 Riding Lawn Mower'; description 'MOWER:LT5 46SD CVT TB'; manuals listed 769-26892, 769-26893, 769-26990, 769-27027, 769-26804, 769-25330, 769-21130B, 769-23590, 769-23593, 769-17291B), retrieved 2026-10-03 (ruling 1: ties the plate to its manuals and engine only) (used for machine and part numbers)
Parts list · PartsTree (dealer copy of MTD IPL) · 2024 variant
Details
Troy-Bilt 13A878BTA66 (2024) IPL .Quick Reference: engine rows Air Filter 937-05066 'AIR FILTER W/PREFILTER', Oil Filter 951-12690 'ENGINE OIL FILTER', Fuel Filter 951-3013 'FUEL FILTER', Spark Plug 951-10292A 'SPARK PLUG (F6RTC/RN11YC/BPR6ES)'; also prints Belt (Deck Spindle) 954-04219 'V-BELT A SEC x 103.24', Blades 942-04290A '23.25" BLADE (2N1) (STAR)', Belt (Lower Drive) 954-0467A 'V-BELT 5L-90.93', Belt (Upper Drive) 954-04208A 'V-BELT 5L x 40.75' (machine parts not stored: no listed document prints them) (used for machine and part numbers)
Parts list · PartsTree (dealer copy of MTD IPL) · 2024 variant
Details
Troy-Bilt 13A878BTA66 (2024) IPL Label Map: 777D31859 'LABEL-TROY BILT 547CC OHV S.E.T. LT5'; 777D37451 'LABEL-46" TROY BILT DECK LT5' (used for machine and part numbers)
Parts list · PartsTree (dealer copy of MTD IPL) · 2024 variant
Details
Troy-Bilt 13A878BTA66 (2024) IPL Engine Accessories: 951-3013 'FUEL FILTER', 490-202-M002 'Genuine Factory Parts FUEL FILTER' (used for machine and part numbers)
Maker's model page · Troy-Bilt LLC
Details
troybilt.com model page 13A878BTA66 (heading 'Bronco 46 Riding Lawn Mower'; description 'MOWER:LT5 46SD CVT TB'; engine text '547cc Troy-Bilt® engine designed for smooth, responsive performance and rugged durability'; manuals listed 769-26804, 769-26892, 769-26893, 769-26990, 769-27027), retrieved 2026-10-05 (ruling 1: ties the plate to its manuals and engine only) (used for machine and part numbers)
Engine manual 769-25330 · MTD Products · September 25, 2020
Details
Operator's Manual, 547 cc OHV Vertical Shaft Engines (Form No. 769-25330, September 25, 2020); p1 cover, p14 Replacement Parts; '951-10292 Spark Plug', '937-05066 Air Filter Assembly (Includes Pre-Filter)', '951-3013 Fuel Filter', '951-12690 Oil Filter' (used for engine)
Engine manual 769-17314 · MTD Products · August 29, 2018
Details
Operator's Manual, 547cc OHV vertical shaft engine (Form No. 769-17314, August 29, 2018); Replacement Parts (an earlier edition of 769-25330); same four lines (used for engine)
Operator's manual 769-23211B · Cub Cadet LLC · May 10, 2021
Details
Parts/Warranty Supplement, Cub Cadet LT 42 to ST 54 FAB (Form No. 769-23211B, May 10, 2021); pp1-2 Replacement Parts; Cub Cadet engine lines '951-12690 Oil Filter: Cub Cadet', '937-05066 Air Filter: Cub Cadet', '951-3013 Fuel Filter: Cub Cadet', '951-10292A Spark Plug: Cub Cadet' (used for engine)
Parts list · PartsTree (dealer copy of MTD IPL) · 2021 variant
Details
Cub Cadet 13A6A9CS010 (2021) IPL .Quick Reference: '951-10292 SPARK PLUG ... Superseded to 951-10292A', '937-05066 AIR FILTER W/PREFILTER', '951-3013 FUEL FILTER', '951-12690 ENGINE OIL FILTER' (used for engine)
Parts list · PartsTree (dealer copy of MTD IPL) · 2021 variant
Details
Cub Cadet 13A6A9CS010 (2021) IPL Label Map: 777D31379 'LABEL-INTELLIPOWER 547CC CUB NX-15' (used for engine)
Parts list · PartsTree (dealer copy of MTD IPL) · 2023 variant
Details
Cub Cadet 13A6A9TSA10 (2023) IPL Engine Accessories: '951-3013 FUEL FILTER' (likewise 13A6A9TS010 2024 and 13B6A9TTA10 2024) (used for engine)