Oil Line Separators
Oil Line Separators: keep your hoses clamped, spaced and rattle-free
Oil line separators are small clamp blocks that hold two or more hoses at a fixed spacing so they can't chafe against each other, the frame, or a hot surface. Anyone who has run a pair of lines through a tight engine bay knows the problem: unsecured hoses vibrate, rub through their outer layer, and eventually weep. A separator drops over the lines, bolts to a bracket or panel, and locks everything in place. It's a cheap part that saves an expensive leak, and it tidies up a bay so routing looks deliberate instead of thrown together.
What ThreePiece stocks
We currently list 6 oil line separators in the Engine Components section, priced from $28 to $40 for what's in stock now (that range moves with availability, so treat it as current rather than fixed). Two brands are represented: Vibrant, which makes up most of the range, and Bikers Choice. Examples include the Vibrant Aluminum Line Separators with 17.5mm ID holes at the lower end, the billet Vibrant 1.18in Billet Aluminum Line Separators, and the Bikers Choice Chrome Plain Oil Hose Separator for 2 hoses at the top of the range.
How to choose
The decision comes down to hose count, bore size and finish. Check the outside diameter of the lines you're clamping against the separator's hole size before you buy — the Vibrant 17.5mm ID part, for instance, tells you exactly what it swallows. Billet aluminum separators like the 1.18in Vibrant give you a clean machined look that suits an exposed bay. The chrome Bikers Choice piece is built for two hoses and leans toward a bright, traditional finish. If you're only tidying a single pair of lines, the two-hose options are the simplest fit; match the bore first, then pick the look you want.
What else you need with it
Separators work alongside the hardware that terminates and routes your lines. Browse Fittings (634 in stock) and Adapters (699 in stock) to finish hose ends and transitions. If you're already in the oil system, pair a fresh Oil Filter and check your Gasket Kits while the bay is open. Cooling and sealing jobs often overlap, so it's worth a look at Radiators and Head Gaskets if you're doing a larger build.
Fitment help and ordering
Every order ships with free shipping, and financing through Affirm and Katapult is available at checkout. Not sure a separator matches your hose diameter? Call our team at 813-535-5801 or reach us through Contact Us before you order. You can also check our FAQ for common ordering questions.