Dorman Vacuum Line Fitting
Dorman Vacuum Line Fittings: Reliable Connections for Every Application
A cracked or broken vacuum line fitting may seem like a minor nuisance, but it can quietly rob an engine of performance, trigger warning lights, and cause erratic behavior in emissions controls, power brakes, HVAC systems, and more. Dorman has built a reputation in the aftermarket by engineering precise, accessible solutions for exactly these kinds of problems — and their lineup of vacuum line fittings is a prime example of that philosophy in action.
A Comprehensive Selection of Shapes and Sizes
What sets Dorman apart in the vacuum fitting category is sheer coverage. Dorman manufactures a comprehensive selection of vacuum and emissions fittings for almost any automotive vacuum job. Their catalog spans every connector geometry a technician or DIYer is likely to encounter: straight, T-shape, Y-shape, F-shape, and L-shape (elbow) configurations, available across a wide range of hose diameters — from 1/8 in. all the way through 3/8 in. and beyond.
Two distinct material families cover the full spectrum of under-hood requirements. Hard fittings are constructed from durable plastic engineered to hold its shape under pressure, while soft fittings are made from heat-resistant PVC vinyl that flexes where rigid routing simply isn't possible. Both types feature barbed ends designed to grip vacuum tubing securely and resist pull-out — a critical characteristic in high-vibration environments.
From Single Pieces to Value Assortments
Dorman packages its vacuum fittings to suit both targeted single-repair jobs and the stocked service bay. Individual connectors — such as the straight hard-plastic 1/8 x 1/8 in. connector or the popular 5/32 x 5/32 x 5/32 in. tee — let owners replace one broken piece without buying more than needed. For shops, Dorman also offers multi-piece assortment value packs, including a 65-piece vacuum connector assortment that is conveniently packaged in a reusable plastic case, keeping commonly needed connectors organized and within reach.
Dorman also markets vehicle-specific vacuum fittings under their AutoGrade line, with direct-fit applications covering popular platforms like the Ford F-150, Ford Expedition, Lincoln Navigator, and Lincoln Mark LT — vehicles notorious for vacuum system issues as they age.
The Dorman Difference: Problem-Solving Engineering
Dorman's broader engineering mission shines through even in a part as humble as a vacuum line fitting. As a company, Dorman is constantly looking for problems to solve and turning them into new product ideas — and some of those solutions, like their OE FIX products, aren't even available from the original vehicle manufacturers. That same mindset applies to their vacuum fitting lineup: instead of simply copying OE designs that are known to fail, Dorman engineers fittings from materials selected for long-term durability in the demanding under-hood environment.
Whether you're chasing a vacuum leak on a weekend project truck or restocking a professional service bay, Dorman's vacuum line fittings offer the breadth of shapes, sizes, and configurations needed to get the job done right the first time. Browse the full selection below, or explore the complete Dorman brand catalog and the broader vacuum line fittings category for all available options.
