Proven Part Mulch Plug Cover Fits Toro 137-5034, 137-7042 Fits 42" TimeCutter SS and SW 2018 and Later

What It Is

This mulch plug cover blocks the side-discharge chute on Toro 42" TimeCutter SS and SW mowers (2018+ models) to force grass clippings back into the deck for finer cutting and nutrient recycling. It replaces OEM parts 137-5034 and 137-7042.

Fitment & Compatibility

• Exact models: Fits Toro TimeCutter SS 4225, 5000, 5425, 6000, 75750, 75751, 75752; TimeCutter SW 4200, 4200S, 5000, 5425—all with 42" deck from 2018 onward.
• Check your deck serial number (stamped near spindle). Mowers built before 2018 use a different chute opening shape.
• OEM vs aftermarket: This is a direct replacement for Toro OEM parts 137-5034 and 137-7042. No adapter needed.
• Measurements: The plug opening is roughly 6" x 8", but always compare the rubber gasket shape on your current plug—some aftermarket copies have slightly different contours that cause gaps.

Key Things to Know

• Low rating red flag: The 2.5/5 score (3 reviews) suggests inconsistent fit—some users report the rubber seal doesn’t seat flush, leading to grass leakage and poor mulching.
• Installation is simple: Remove the two spring clips, slide old plug out, push new one in, and reattach clips. No tools required.
• Common gotcha: The plastic tab that locks the plug in place can snap if over-tightened or if the deck is caked with dried grass. Clean the chute area thoroughly before installing.
• Check for warping: If your mower was stored in direct sun, the old plug may have warped; this replacement is also plastic and prone to the same issue over time.

Should You Buy It

Only buy this if you need a direct replacement for a broken or missing OEM plug on a 2018+ 42" TimeCutter and can’t find the genuine Toro part at a similar price. Given the low rating and potential fitment issues, consider spending a bit more for the OEM Toro plug (137-5034 or 137-7042) for guaranteed compatibility and seal quality.