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A Direct-Fit Rear Seat for the Whole EZGO Platform Family

The Black Golf Cart Rear Seat Cushion Set for EZGO TxT, ST, ST Sport & Valor Models is a 2026-model-year-compliant seating solution built for the most widely deployed fleet and recreational golf cart platform in North America. One set covers the EZGO TxT (1996-2026), the ST 350/400/480 utility series, the ST Sport, and the Valor entry-level line.

It bolts in as a direct-fit replacement with no subframe modification. The same SKU handles OEM restoration work and aftermarket retrofit jobs, in fleet garages, dealership service bays, and home shops.

Compliance is documented at the material level: SAE J2412:2025 accelerated UV-exposure thresholds, FMVSS 302 and ISO 3795 flammability resistance, and marine-grade vinyl MIL-spec abrasion cycling. The exact numbers sit in the spec sheet below.

Why One SKU Covers TxT, ST and Valor

EZGO stamps the same rear seat pan for the TxT and ST platforms, part number 608127G01 through revision G. Identical pans mean the cushion footprint stays 100% cross-compatible from 1996 through 2026.

The Valor is the outlier. Its rear subframe spaces the latch receivers 6 mm narrower, so the cushion can look 3-4 mm too wide at the edges before you torque it down. Elongated T-slot channels in the base plate provide ±4 mm of lateral float per side, and the edges pull inward as the T-bolts clamp to the 8-10 N·m spec. Retention force stays intact.

That single-SKU approach removes the inventory split at dealership parts counters, which previously stocked separate cushions for what are materially the same platform family.

Other Interior Parts While You Are at It

If the seat job turns into a broader cabin refresh, the Interior Auto Parts collection on Koeep groups cushions, covers, and related trim so you can match components in one order.

What Changed for 2026, in Numbers

The 2026 production cycle carries three material-level refinements over earlier aftermarket cushions. Each targets a measured failure mode.

Dual-laminate vinyl, 32 oz/yd²

Older covers run 28 oz/yd² single-ply vinyl. This set uses a dual-laminate 32 oz/yd² construction: a UV-stabilized PVC topcoat at 75 Shore A durometer fused to a knitted polyester backing. The bonded layers stop ply separation delamination, the dominant failure mode fleet tear-down analyses logged from 2018 through 2024.

Foam with 5% bio-polyol

The substrate is open-cell HR polyurethane with 5% bio-polyol content. That trims the cradle-to-gate carbon footprint by about 12% while ILD curves stay identical to 100% petrochemical formulations, so seat feel does not change.

Tex 90 thread

Sewing thread is now PTFE-coated, UV-inhibited bonded polyester at Tex 90 weight with a 22 lb tensile break strength, a 40% improvement over the Tex 70 thread in Gen-1 and Gen-2 aftermarket covers.

2026 Specification Sheet

Values describe the 2026 production run of the 2026 Koeep cushion set, verified 2026-05-14 against 2026 Q1 production samples.

CAN-Bus, OCS and Fault Codes

The seat is a passive assembly: zero network load, electrically transparent to the CAN 2.0B and 3.0 bus topologies on 2024 through 2026 EZGO ELiTE lithium platforms.

Where B0081 Codes Come From

A passive cushion does not generate trouble codes on its own, but a sloppy install can. On ELiTE models with the optional OCS (Occupant Classification System) mat, an air gap under the cushion skews the bladder's baseline pressure and can set B0081-13 (Passenger Seat Occupant Classification Sensor, Circuit Open) or B0081-1A (Sensor Calibration Out of Range).

The molded cushion carries a 0.8 mm recessed centerline channel that preserves the OCS bladder's calibrated pressure envelope. Fitment was verified on 2026 Valor and TxT ELiTE platforms with Bosch CDR 900 scan-tool validation.

Related Code Ranges

• B0080 through B0085: occupant classification circuit, calibration and performance faults.
• B0010 through B0019: seatbelt pretensioner deployment-loop monitoring, relevant if front-seat removal is needed to reach the rear cushions.
• U0140 through U0146: lost communication with the body control module, possible if seat wiring connectors stay disconnected for days on a CAN 3.0 network.

Installation Steps That Prevent Callbacks

• Align the 0.8 mm centerline channel with the OCS bladder strip before bolting anything down.
• Press along all four T-bolt anchor points until the neoprene isolation washers compress to roughly 1.5 mm of visible thickness.
• Torque the T-bolts to 8-10 N·m; the slots draw the cushion edges inward as the fasteners travel.
• Never force the sealed GT 150-series 2-pin bladder connector at the seat wiring pigtail. Forced reassembly splays the pins.

If a code persists after a correct install, run the re-zero routine: OCS Learn, then Reset Learned Pressure Baseline, on a Bosch CDR 900 or an EZGO dealer diagnostic tool.

Washing and UV Inspection

Pressure washing rules

Pressure washing is fine within limits: 1,200 PSI maximum, a 25° fan nozzle minimum, an 18-inch standoff, and cold water at or below 30°C (86°F).

• Skip 0° pencil jets. Seam-line pressure can push water through needle perforations into the foam and start mildew, even though the vinyl itself resists fungus.
• After washing, give the cushions 24 hours of passive drying in a shaded, ventilated spot before you refit the anchor bolts.
• No heat guns and no sunlight baking. Rapid thermal expansion of trapped moisture raises micro-blisters between the vinyl face and the PET knit backing.

Early UV warning signs

Visible cracking is a late symptom. Under SAE J2527, the first measurable change is a 60° gloss-meter shift above 8 GU from baseline. Spot-check the top-center cushion panel, the highest-exposure zone, once a quarter.

Secondary markers: ΔE above 3.0 on a spectrophotometer (CIE L*a*b*), white chalking that transfers to a black cloth wipe, and micro-crazing at thread-seam perforations under 10× magnification. The dual-laminate build delays these precursors about 40% longer than single-ply covers.

Ordering, Variants and Fleet Quotes

Order the Black Golf Cart Rear Seat Cushion Set for EZGO TxT, ST, ST Sport & Valor models from the main product page. The identical set also sits on the catalog's TxT/ST/ST Sport/Valor cushion listing and a second listing, so a sold-out counter on one URL does not block the order.

For fitment verification, cross-reference OEM EZGO P/N 608127G01 (TxT and ST rear cushion assembly) and Valor rear-seat subframe P/N 609832V01 before you buy.

Volume Quotes and Direct Support

Fleet and reseller pricing goes through the request-for-quote page. For quick fitment questions, email support@koeep.com or message the team on WhatsApp.

Koeep also publishes buying guides, including 2024's Best Selling Tires Ranked by Performance and Safety, useful background if you maintain a mixed fleet of carts and light vehicles.

FAQ: 2026 Fitment, Electronics and Care