A gas grill is only as good as what you run alongside it. The right accessories are not add-ons so much as the difference between a grill that gets used every week and one that is a hassle to maintain, connect or protect. Here is what actually matters for GRLLR’s Prime gas grill range, and why.
Every Prime gas grill needs a way to connect to its fuel source, and this is the accessory people most often forget until installation day. The hose and regulator set is what connects a Prime grill to a standard propane bottle, and it is worth checking the length you need before you order rather than after the grill has arrived.
If you would rather run off mains natural gas than swap propane bottles, the natural gas kit converts a Prime grill for that instead. This suits a permanent outdoor kitchen installation better than bottled gas: no bottles to store or run out mid-cook, at the cost of needing a gas engineer to run the supply line in the first place.
The standard grill bars on a Prime G3S or G5S handle most grilling, but a dedicated grill plate is worth adding if you cook much fish, smaller vegetables or anything that would otherwise fall through the bars. It sits directly on the existing grates rather than replacing them, so it is easy to add or remove depending what is on the menu.
For anyone hosting regularly, the rotisserie attachment turns a Prime grill into something closer to a proper spit roast setup, useful for a whole chicken or a joint that benefits from slow, even rotation rather than direct heat from one side.
A cover is the single accessory that most affects how long a gas grill lasts outdoors in the UK. GRLLR sells a cover for each Prime model rather than a generic one-size-fits-all, because a loose cover flaps in wind and lets moisture in at the gaps, while a properly fitted one does not. Check the exact model, G3S, G4S, G5S or G4 Build In, before ordering, since the covers are not interchangeable between them.
Left uncovered, control knobs, igniters and hose connections are usually the first parts to suffer from British weather, well before the main body of the grill. A cover is a small cost against replacing any of those.
Less glamorous than a rotisserie, but just as important: gasket sets keep the seals around the grill body and lid airtight, which affects both heat retention and how evenly the grill cooks. These wear over time, faster if the grill sees heavy use or sits uncovered, and are worth checking annually rather than waiting until you notice a problem with cooking temperature.
The Prime range also fits into GRLLR’s modular Connect system via the Connect Stove Unit, which houses its own 2-burner gas hob rather than a standalone Prime grill. If that is your setup, the same broad principles apply, a properly matched cover and a checked gas connection make the biggest difference to how long it lasts, but confirm with your installer whether the unit’s built-in hob runs off a standalone hose and regulator or a fixed supply line, since the two are connected differently.
Not every accessory suits every household. A reasonable starting point for a new Prime grill is the correct hose and regulator or natural gas kit to get it running, plus a fitted cover to protect it. Add a grill plate if your cooking regularly goes beyond straightforward grilling, and a rotisserie if you host often enough to make use of it.
The full range, including parts for older Prime models, is in the gas grill accessories category. If you are choosing a grill before choosing accessories, our guide to picking a built-in gas barbecue covers the Prime range in more detail, including the difference between the G3S, G4S and G4 Build In.
