Riding mower · Troy-Bilt Bronco 42 / TB2142

Troy-Bilt 13AL78BS023 and 13AL91KS066 parts: blades, deck belt, spark plug, air filter and oil filter

Checked October 3, 2026 · From the manufacturer's operator's manual and parts list

42 in deck

Fits 13AL78BS023 (42 in deck) and 13AL91KS066 (42 in deck).

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Parts for the Troy-Bilt 13AL78BS023 and 13AL91KS066

Part	Number and size	Buy
Blade	MTD `942-04308A` part details Replaces 942-04308, 942-04312, 942-04312A	Search Amazon for 942-04308A
Deck belt	MTD `954-04060C` part details Replaces 954-04060B	Search Amazon for 954-04060C
Oil filter	Briggs & Stratton `492932S` part details	Search Amazon for 492932S
Air filter	MTD `BS-793569`	Search Amazon for BS-793569
Spark plug	MTD `759-3336` part details Replaces BS-491055	Search Amazon for 759-3336

Checked October 3, 2026 · 13 sources

Engine: Briggs & Stratton

Oil filter: Briggs & Stratton 492932S
Spark plug: MTD 759-3336; Champion RC12YC
Air filter: MTD BS-793569

Other machines that use these parts (14)

Cub Cadet LTX 1040 blade, deck belt and spark plug
Cub Cadet LTX 1042 KW / XT2-LX42 KW blade
Cub Cadet XT1 LT46 with IntelliPower / XT1 LT42 with IntelliPower and others blade
Cub Cadet XT1 LT42 blade
Troy-Bilt Pony 42 / Pony 42X and others blade and deck belt
Troy-Bilt Super Bronco 42 XP blade
Troy-Bilt Pony 42 blade and deck belt
Troy-Bilt Pony 42K blade and deck belt
Cub Cadet ZT1 46 / ZT1 42 blade
Husqvarna YTH2348 / YTH24V54 oil filter
Troy-Bilt TB2246 oil filter and spark plug
Troy-Bilt Super Bronco 54 / Super Bronco 50 spark plug
Cub Cadet LTX 1046 M / LTX 1045 spark plug
Troy-Bilt Storm 3090 / Storm 2840 spark plug

Where these numbers come from (13 sources)

Every part number above is printed in at least two of these. Checked October 3, 2026. How we check parts.

Operator's manual 769-26293 · Troy-Bilt LLC · October 14, 2021
Details
Parts/Warranty Supplement, Troy-Bilt Pony, Bronco (Form No. 769-26293, October 14, 2021); p1 Replacement Parts (service and packaged part numbers); '954-04060C 490-501-Y044 Deck Belt (42” Deck)', '942-04308A 490-110-Y108 High-Lift Blade (42” Deck)', '734-04240A Tire (Front) 15 x 6 x 6 Round Shoulder', '734-04241 Tire (Rear) 20 x 8 x 8 Round Shoulder' (used for machine and part numbers, engine)
Operator's manual 769-17291D · Troy-Bilt LLC · August 27, 2020
Details
Parts/Warranty Supplement, Troy-Bilt Pony, Bronco (Form No. 769-17291D, August 27, 2020); p1 Replacement Parts; '954-04060C Deck Belt (42” Mowing Deck)', '942-04308A High-Lift Blade (42” Mowing Deck)', same tire lines (an earlier form of the Pony/Bronco supplement; with 769-26293, one source) (used for machine and part numbers, engine)
Parts list · PartsTree (dealer copy of MTD IPL) · 2019 variant
Details
Troy-Bilt 13AL78BS023 (2019) IPL .Quick Reference: 954-04060C Belt (Deck Spindle); 942-04308 Blades (superseded to 942-04308A; Deck page prints 942-04308A from 2020); Briggs parts BS-793569 Air Filter, BS-793685 Pre-Filter, BS-492932S Oil Filter, BS-394358S Fuel Filter, BS-491055 Spark Plug (superseded to 759-3336) (used for machine and part numbers, engine)
Parts list · PartsTree (dealer copy of MTD IPL) · 2020 variant
Details
Troy-Bilt 13AL78BS023 (2020) IPL .Quick Reference: 954-04060C Belt (Deck Spindle); 942-04308 Blades (superseded to 942-04308A; Deck page prints 942-04308A from 2020); Briggs parts BS-793569 Air Filter, BS-793685 Pre-Filter, BS-492932S Oil Filter, BS-394358S Fuel Filter, BS-491055 Spark Plug (superseded to 759-3336) (used for machine and part numbers)
Parts list · PartsTree (dealer copy of MTD IPL) · 2021 variant
Details
Troy-Bilt 13AL78BS023 (2021) IPL .Quick Reference: 954-04060C Belt (Deck Spindle); 942-04308 Blades (superseded to 942-04308A; Deck page prints 942-04308A from 2020); Briggs parts BS-793569 Air Filter, BS-793685 Pre-Filter, BS-492932S Oil Filter, BS-394358S Fuel Filter, BS-491055 Spark Plug (superseded to 759-3336) (used for machine and part numbers)
Parts list · PartsTree (dealer copy of MTD IPL) · 2022 variant
Details
Troy-Bilt 13AL78BS023 (2022) IPL .Quick Reference: 954-04060C Belt (Deck Spindle); 942-04308 Blades (superseded to 942-04308A; Deck page prints 942-04308A from 2020); Briggs parts BS-793569 Air Filter, BS-793685 Pre-Filter, BS-492932S Oil Filter, BS-394358S Fuel Filter, BS-491055 Spark Plug (superseded to 759-3336) (used for machine and part numbers, engine)
Parts list · PartsTree (dealer copy of MTD IPL) · 2022 variant
Details
Troy-Bilt 13AL78BS023 (2022) IPL Engine Accessories: key 6 BS-692236 'EXHAUST GASKET', key 13 951-05956 'MUFFLER (B&S SINGLE W/DEFLECTOR)' (same in 2019-2021) (used for machine and part numbers)
Parts list · PartsTree (dealer copy of MTD IPL) · 2022 variant
Details
Troy-Bilt 13AL78BS023 (2022) IPL Wheels (Front) 634-05053 'WHEEL ASSEMBLY (15 X 6 X 6)' and Wheels (Rear) 634-04324 'WHEEL ASSEMBLY (20 X 8 X 8)' (page wheels-rear-30) (used for machine and part numbers)
Operator's manual 769-25793A · MTD Products · September 8, 2021
Details
Operator's Manual, Front Engine Lawn Tractor (Form No. 769-25793A, September 8, 2021); 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 13AL78BS023 (heading 'Bronco 42 Riding Lawn Mower'; description 'MOWER:LT5 42SD CVT B STYLE'; manuals listed 769-26272, 769-26293, 769-25793A, 769-17291D_FR, 769-17291D, 769-25793, 769-21130B, 769-17291B, 769-17290B, 769-17171; engine text '19 HP/540cc Briggs & Stratton Intek™ engine'), retrieved 2026-10-03 (ruling 1: ties the plate to its manuals and engine only) (used for machine and part numbers)
Operator's manual 769-08784 · Troy-Bilt LLC · January 03, 2013
Details
Operator's Manual, Hydrostatic Lawn Tractor, TB 2142 (ManualsLib mirror: p1 cover, pp30-31 Replacement Parts) (used for machine and part numbers)
Parts list · PartsTree (dealer copy of MTD IPL) · 2013 variant
Details
Troy-Bilt TB 2142 (13AL91KS066) - 42" Lawn Tractor (2013) IPL: .Quick Reference, Mower Deck (#39 blade, #47 belt, #5 'Deck Assy, Offset, 42"'), Drive & Rear Wheels (#40 954-04207), Engine Accessories (used for machine and part numbers)
Maker's model page · Troy-Bilt LLC
Details
Prior-year model page 13AL91KS066 (description and manual list: MOWER:NX9 LT:2100 42IN HYD KST; manuals 769-08784 (operator), 769-08634 (parts 2013)), retrieved 2026-10-02 (used for machine and part numbers)