Description
R1234yf universal service caps & valve core kit
A complete, shop-ready assortment for servicing modern R1234yf (and R134a) A/C systems — service caps in every common port thread, standard and vehicle-specific valve cores, primary seals, the R1234yf and R134a sockets, a valve-core removal tool, and service-port adapters. And it’s refillable: reorder any component individually to keep the cabinet stocked.
One kit, the whole service bench
Everything to cap, seal & core a system
Complete & ready
Caps, cores, seals, sockets, and a core tool in one organized kit — grab it and go instead of hunting for singles.
Every common thread
Low- and high-side R1234yf caps in M8, M9, and M10 threads, short- and long-post, so you’re covered across makes.
Vehicle-specific cores
Standard cores plus GM/Peterbilt, Kia, Peugeot/Volvo, European large-bore, and JRA valve cores for the odd ports.
Tools included
The R1234yf socket, an R134a double-ended socket, and a universal valve-core removal tool are all in the box.
R134a too
Includes R134a primary seals, sockets, and standard cores — one kit covers both refrigerants.
Refillable
Every part links to its own page — reorder just what you use to keep the kit topped up.
Full contents — click any item to reorder
Each component below links to its own page, so you can restock exactly what you use.
Service caps & tethers
| Component | Qty |
|---|---|
| R1234yf cap — M8 × 1.0 short post, low side (233-6104) | 5 |
| R1234yf cap — M8 × 1.0 long post, low side (233-6105) | 5 |
| R1234yf cap — M9 × 1.0 short post, low side (233-6106) | 5 |
| R1234yf cap — M10 × 1.25 short post, hi-side (233-6107) | 5 |
| R1234yf cap — M10 × .75 long post, hi-side (233-6108) | 5 |
| R1234yf cap — M10 × 1.0 short post, hi-side (233-6114) | 5 |
| R1234yf service cap tether (233-6103) | 5 |
Valve cores
| Component | Qty |
|---|---|
| Valve core — standard (R1234yf / R134a / R-12) (233-7003) | 10 |
| Valve core — M8 GM / Peterbilt diesel truck (233-7000) | 5 |
| Valve core — M10 GM / Peterbilt diesel truck (233-7004) | 5 |
| Valve core — Kia special service (233-7009) | 5 |
| Valve core — JRA / GM / FD high-flow (233-7002) | 5 |
| Valve core — M8 Peugeot / Volvo (233-7005) | 5 |
| Valve core — large-bore European (233-7007) | 5 |
| Valve core — GM large bore (233-7001) | 5 |
Primary seals
| Component | Qty |
|---|---|
| R1234yf hi-side primary seal (233-6116) | 2 |
| R1234yf low-side primary seal kit (233-6027) | 2 |
| R134a hi-side primary seal (233-6024) | 1 |
| R134a low-side primary seal (233-6025) | 2 |
Tools & adapters
| Component | Qty |
|---|---|
| R1234yf socket (242-1448) | 1 |
| R134a double-ended socket — GM 13 / 16 mm (242-1449) | 1 |
| Universal valve-core removal tool (M8, M10, JRA, standard) (242-1498) | 1 |
| Service port adapter — 16 mm GM (233-6026) | 2 |
Kit details
Service kit FAQ
What’s included in the kit?
Can I reorder individual parts?
Does it cover R134a as well as R1234yf?
What tools come in it?
Who is this kit for?
Shop A/C service kits
Browse service kits and set your quantities in one place.
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(Most Popular) O-Ring Start Up Kit 48 Compartments | 233-3179 | $50.50 | In stock | ||
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Sealing Washer Master 48 Compartment Kit | 233-3000 | $197.14 | In stock |
Add the R1234yf service kit
In stock and ready to ship. Need bulk quantities or a custom assortment for your shop? Call and we’ll set you up.
Add to cart ↑ Contact usVehicle and manufacturer names are used for identification only and do not imply affiliation or endorsement. Confirm the correct cap thread, valve core, and seal for your vehicle’s service ports before installing. Follow all applicable A/C service and safety procedures.
