Description

Bolens 1258, H12XL, 1658, H16XL, 1858 Parts Catalog – Factory Parts List for 12-18 HP Tractors

You’ve got a Bolens tractor on the lift – 1258, H12XL, 1658, H16XL, or 1858 – and you need a PTO seal or a seat bracket. You call the dealer, they want a serial number and a part number you don’t have. Or you flip through your binder of aftermarket diagrams and find a drawing that’s close but uses a different bolt pattern. That’s time wasted. This Bolens 1258, H12XL, 1658, H16XL, 1858 Parts Catalog is the factory parts list – 21 pages of OEM part numbers straight from Bolens. It covers serial numbers 0100101 through G199999. No guesswork.

What This 21-Page Parts Catalog Covers

This is not a service manual. This is a parts catalog – exploded views of every assembly on these 12 to 18 HP tractors. The OCR excerpt shows the seat assembly, hood hinge, fender decals, muffler support brackets. Ref. numbers pair with part numbers like 1730207 for the seat, 1734115 for the seat support. You get fastener specs: carriage bolts 5/16-18 x 2, locknuts 5/16-18, flange locknuts 3/8-16. The tunnel assembly, foot rest supports, actuator bracket – it’s all listed. 21 pages might not sound like a lot, but each page is dense with part callouts and quantities.

Does This Manual Cover Your Bolens Model?

Explicitly covers models 1258, H12XL, 1658, H16XL, and 1858. Note that the OCR also mentions model 1458 in passing, but this catalog is for the five models in the title. Serial number range 0100101 through G199999. If your tractor falls in that range, these part numbers apply. For earlier or later machines, you’ll want a specific supplement. The hood hinge assembly on page 1 shows serial number break at 0199999 for different hinge support (part 1726820). Always check your serial plate before ordering.

Factory Parts Catalogs: The Real Difference vs. Aftermarket

I have seen aftermarket parts lists that claim universal fit for Bolens tractors. They show a generic seat bracket and tell you to drill new holes. That is not how you restore a tractor. The factory Bolens catalog gives you the exact part number for every component. For example, foot rest support right-hand is 1728816, left-hand is 1728814. The clip underneath the seat is 1727127 – not 1722728. Aftermarket schematics lump them together. You order the wrong clip and the seat wobbles. This catalog comes from the original Bolens digital archive – it’s not a reprint of a reprint. When you Automotive Industry Overview, you realize that factory documentation is the only way to avoid fitment errors. There’s a reason OEMs spend thousands on engineering drawings. This catalog is that engineering output.

3 Reasons to Use the Factory Parts List

First: accuracy. Bolens designed these tractors with specific fasteners – locknuts, speed nuts, carriage bolts in specific lengths. The catalog lists every one. Second: completeness. The exploded view shows where each part goes – you see the assembly order. Third: time saved. You cross-reference the part number with your local dealer or online supplier instead of returning three wrong parts. One look at the catalog tells you the muffler assembly for models 1258 and H12XL is 1732358, for the 1658, H16XL, 1858 it’s 1737557. That’s information you can’t afford to guess. The FMC Bolens 1666 Parts Catalog – 23 Page Factory Parts List might help if you have a different model, but for this series, this is it.

Get the Right Part Number Fast

Start with the exploded view for the area you’re working on – say the hood hinge. The reference numbers point to a table with the part number and description. That table uses a “REQD” column – so you know how many to order. The catalog covers the hood decal, instrument panel decal, floor board decal. Need a new instruction decal for the tunnel? Part 1734813. The catalog also includes hardware like hex head screws, lockwashers, and pivot rivets. Keep this PDF on your tablet in the shop, or print the page you need. It’s a working tool, not a coffee table book. If you’re also working on a 1660, check out the FMC Bolens 1660 Parts Catalog – 23-Page Factory Parts List and for the 1055, the FMC BOLENS Tractor 10 HP Model 1055 Parts List might be useful.

Frequently Asked Questions

Will this catalog show me how to remove the hood?

No. This is a parts catalog, not a service manual. It lists parts – no removal steps.

Does the catalog include part numbers for the engine, transmission, and PTO?

Yes, but only the parts that are specific to the Bolens chassis – such as the muffler assembly, seat, fender panels, and associated fasteners. The engine itself (Kohler, Briggs & Stratton) is not detailed as an exploded assembly; you’d need the engine manufacturer’s parts list for internal engine components. However, the Bolens catalog includes the mounting brackets, gaskets, and adapters that connect the engine to the tractor frame. For transmission parts, look for tunnel assembly references – the catalog gives part numbers for the tunnel cover, foot rests, and linkage parts. If you need a complete engine overhaul parts list, this is not that document. But for the tractor sheet metal, seat, steering column, and decals, it’s the right source.

Stop ordering parts by guesswork. For the 1258, H12XL, 1658, H16XL, 1858, this 21-page parts catalog is the only factory source you need. Automotive Industry Overview confirms that OEM documentation is the foundation of proper repair. Access the Factory Manual from AutoRepairManuals today and get back to wrenching with the right numbers in your hand.