The Catalog

Six Series, 48 SKUs

Two construction families. The Reinforced Series handles charge air, coolant and intake. The Vacuum & Boost line handles reference and signal. Both are pressure-tested to 150 PSI.

Sierra silicone hose production line
Family 01

The Reinforced Series

4-ply silicone over woven polyester reinforcement. 5.5mm wall. Rated −76°F to 482°F at 150 PSI. Engineered to survive boost spikes, heat soak and chassis flex.

Construction
4-ply silicone + polyester
Wall thickness
5.5 mm
Temperature
−76°F to 482°F
Pressure
150 PSI tested hold
Forms
Coupler · Elbow · Hump · Reducer · Straight
ELB-LSierra extended 90 degree elbow

90° Elbow — Extended

True dual 102mm legs. For charge-pipe and intercooler routing that needs reach.

  • 9 SKU
  • 102mm legs
ELB-SSierra compact 90 degree elbow

90° Elbow — Compact

Short-leg geometry for tight engine bays where space is the constraint.

  • 9 SKU
  • Compact
HMPSierra hump coupler

Hump Coupler

The flex hump absorbs vibration and misalignment so the joint never fatigues.

  • 6 SKU
  • Flex hump
REDSierra reducer couplers

Reducer

Step between two diameters without a kink or a flow-killing collapse.

  • 9 SKU
  • Step ID
STRSierra silicone straight coupler

Straight Coupler

The workhorse join for intake-to-intercooler and throttle-body connections.

  • 9 SKU
  • Straight

42 Reinforced SKUs

Across five forms and a full range of inside diameters. Find your fitment on Amazon.

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Sierra single layer silicone vacuum hose 3mm
Family 02

The Vacuum & Boost Series

Single-layer extruded silicone — the industry standard for vacuum reference and boost signal. Clean bends, no collapse, 3mm to 6mm ID.

Construction
Single-layer extruded silicone
Inside diameter
3mm · 4mm · 6mm
Temperature
−40°F to 428°F
Pressure
150 PSI rated
Built for
Wastegate · BOV return · brake booster · MAP signal
Shop Vacuum Line

Sierra supplies the silicone hose. Hardware such as T-bolt clamps is sold separately — pair with the clamp range that matches your application.