LTX1045 Deck Spindle Rebuild Kit for 46in Decks - Reliable Replacement

Our review of the LTX1045 Deck Spindle Rebuild Kit finds it best suited for owners who need a full 46in deck refresh with parts that match common Troy-Bilt and MTD models. The kit includes two spindle assemblies, two flat idler pulleys and a 103 in belt, making it a convenient one-purchase solution for rebuilding a worn deck. Installers will appreciate that the parts are compatible with a long list of model numbers and that the spindle height and pulley fits are specified, which helps confirm compatibility before ordering.

Key Features

• Complete kit: Two spindle assemblies, two flat idler pulleys and one 103 in belt provide everything needed to rebuild a 46in deck in one service session.
• Wide compatibility: Spindles and pulleys list many Troy-Bilt and MTD part numbers so homeowners can match parts to several LTX1045, LTX1046 and Horse model variants.
• Specified spindle height: The spindles have a height of 6 6/7 in, which helps when confirming fit against the original assemblies.
• Correct pulley fit: Flat idler pulleys are compatible with multiple MTD pulley numbers, reducing the chance of misfit during replacement.
• Belt included: The 1/2 in x 103 in belt removes the need to source a separate drive belt for many Troy-Bilt and MTD 46in decks.

Who It's For

The kit is aimed at DIY homeowners and independent repair technicians who maintain Troy-Bilt, MTD and related 46in mower decks and prefer replacing multiple wear parts at once. It is particularly useful when both spindle bearings and deck belt show wear or when a preventive rebuild is planned before the mowing season.

Users who should look elsewhere include owners of non-compatible deck sizes or machines with different spindle heights, and anyone who needs OEM-branded parts for long-term heavy commercial use, since one customer reported a spindle failing after a few cuttings and some concern about belt length was noted.

Pros & Cons

Pros

• Good value for money when replacing multiple deck parts at once, since spindles, pulleys and belt are bundled.
• Parts are easy to install for a mechanically inclined owner, matching many Troy-Bilt and MTD reference numbers.
• Clear specification of spindle height and belt size helps verify compatibility before purchase.

Cons

• Some customers reported a concern with belt length and at least one report of spindle durability issues after limited use, so longevity may vary by use case.

Specifications

Kit contents	2 spindles, 2 flat idler pulleys, 1 belt
Spindle compatibility	Fits Troy-Bilt/MTD part numbers 618-04636, 618-04865 and variants
Spindle height	6 6/7 in
Pulley compatibility	Compatible with MTD 753-08171, 756-04129 and related numbers
Belt size	1/2 in x 103 in
Deck size	46 in deck rebuild kit

Our Verdict

The LTX1045 Deck Spindle Rebuild Kit is a practical, cost-effective option for homeowners restoring a 46in Troy-Bilt or MTD deck, offering matched spindles, pulleys and a belt in one package. It is good value for seasonal maintenance or partial rebuilds, though buyers seeking maximum commercial-grade longevity should weigh reports of variable durability and check belt length carefully before purchase.

Frequently Asked Questions

Will this kit fit my 46in LTX1045 deck?
It is compatible with many LTX1045 and LTX1046 model variants listed by part number; verify spindle height 6 6/7 in and your original part numbers against the kit listing.

Is the belt the correct length for 46in decks?
The kit includes a 1/2 in x 103 in belt that fits many Troy-Bilt and MTD 46 in decks, but some users reported belt size concerns so confirm your machine's required belt length first.

Are these OEM parts?
The kit provides compatible replacement spindles and pulleys for Troy-Bilt and MTD part numbers; it is a third-party rebuild kit intended for repair and replacement rather than OEM branding.