Essential Components for Vehicle Heating and Air Conditioning

This collection provides everything you need to build or repair your vehicle's heating and A/C systems. From rotary fan switches to flexible ducting, aluminium unions, bulkhead flanges, and vent trims, these parts are perfect for classic builds or custom installations.

Jump To
A/C Parts
Heating Parts
Joiners, Reducers & Tee's
Vents
Sidebar

Filter Type

Filter Sub Type

Brand

Price

£
to
£

Latest Products

Smiths Pressure Transducer - Pressure Sender

Smiths Pressure Transducer - Pressure Sender

Genuine Smiths Smiths Oil pressure sender to suit Smiths Classic electrical gauges. Has 1/8NPT thread. This Smiths Classic Pressure sender measures 52mm diameter by 40mm in height (not including the thread or electrical connector).
£82.00
£0.00
£82.00
(-0%)

Engine Oil

CASTROL EDGE 5W-40 Fully Synthetic Engine OilCASTROL EDGE 5W-40 Fully Synthetic Engine Oil
Quick Add
Close

CASTROL EDGE 5W-40 Fully Synthetic Engine Oil

Advanced full synthetic engine oil for maximum performance and protection. Improves fuel economy and exceeds industry standards.
£13.96
£0.00
£13.96
(-0%)
Quick Add
Close
Filter
51 results
  • 10
  • 15
  • 20
  • 25
  • 30
  • 50
  • Featured
  • Best selling
  • Alphabetically, A-Z
  • Alphabetically, Z-A
  • Price, low to high
  • Price, high to low
  • Date, old to new
  • Date, new to old
Sort

Sort by:

  • Featured
  • Best selling
  • Alphabetically, A-Z
  • Alphabetically, Z-A
  • Price, low to high
  • Price, high to low
  • Date, old to new
  • Date, new to old
  • Naca Duct Black Large 210mm - Car Builder SolutionsNaca Duct Black Large 210mm - Car Builder Solutions

    Naca Duct Black Large 210mm

    Can be bonded or riveted to body. 235mm x 190mm x 45mm high.
    £14.40
    £0.00
    £14.40
    (-0%)
  • Moulded ABS Vent 380 x 90mm - Car Builder Solutions
    Out Of Stock

    Moulded ABS Vent 380 x 90mm

    Durable low-profile ABS vent, 380x90mm, ideal for flat or curved surfaces. Easy installation. Sleek and efficient ventilation.
    £10.80
    £0.00
    £10.80
    (-0%)
    Out Of Stock
  • Rectangular Vent 145mm x 52mm - Car Builder SolutionsRectangular Vent 145mm x 52mm - Car Builder Solutions

    Rectangular Vent 145mm x 52mm

    Control airflow with this adjustable rectangular vent. Featuring six directional flaps and easy installation, it's perfect for demisting and dashboard ventilation.
    £10.20
    £0.00
    £10.20
    (-0%)
  • 60 x 77mm Rotating Panel Vent - Car Builder Solutions60 x 77mm Rotating Panel Vent - Car Builder Solutions

    60 x 77mm Rotating Panel Vent

    This vent will bolt into a 55mm diameter hole in a panel or plenum with two 4mm holes at 63mm centres. The rotating part opens the air flow from closed to 50% over twelve selectable stages.  Front projection 10mm.  Rear projection 10mm Weight 20gms. ...
    £5.40
    £0.00
    £5.40
    (-0%)
  • Moulded ABS Vent 550 x 90mm - Car Builder Solutions
    Out Of Stock

    Moulded ABS Vent 550 x 90mm

    Low-profile ABS vent, 550mm x 90mm, ideal for flat or curved surfaces. Easy installation, screws/rivets available separately.
    £12.00
    £0.00
    £12.00
    (-0%)
    Out Of Stock
  • Aluminium Mesh Vent 600mm x 120mm - Car Builder Solutions
    Out Of Stock

    Aluminium Mesh Vent 600mm x 120mm

    600mm x 120mm. Pre drilled 20mm wide frame with 3mm fixing holes.
    £33.60
    £0.00
    £33.60
    (-0%)
    Out Of Stock
  • Steel Bonnet Vent Right Hand 233mm - Car Builder SolutionsSteel Bonnet Vent Right Hand 233mm - Car Builder Solutions

    Steel Bonnet Vent Right Hand 233mm

    Overall size: Front width 156mm. Rear width 114mm. Front to back 233mm. Height 44mm.
    £19.20
    £0.00
    £19.20
    (-0%)
  • Demist Vent 196 mm x 26mm - Car Builder SolutionsDemist Vent 196 mm x 26mm - Car Builder Solutions

    Demist Vent 196 mm x 26mm

    Fits into a 165mm x 18mm rectangular hole.
    £4.80
    £0.00
    £4.80
    (-0%)
  • 2" Cockpit Ventilators Small - Car Builder Solutions2" Cockpit Ventilators Small - Car Builder Solutions

    2" Cockpit Ventilators Small

    Fit in to a 2" hole. For panels between 1mm and 3mm.
    £18.00
    £0.00
    £18.00
    (-0%)
  • Steel Bonnet Vent Left Hand 233mm - Car Builder SolutionsSteel Bonnet Vent Left Hand 233mm - Car Builder Solutions

    Steel Bonnet Vent Left Hand 233mm

    Overall size: Front width 156mm. Rear width 114mm. Front to back 233mm. Height 44mm.
    £19.20
    £0.00
    £19.20
    (-0%)
  • Naca Duct Carbon Effect Small - Car Builder SolutionsNaca Duct Carbon Effect Small - Car Builder Solutions

    Naca Duct Carbon Effect Small

    Can be bonded or riveted to body. 180mm x 145mm x 25mm high
    £14.40
    £0.00
    £14.40
    (-0%)
  • Moulded ABS Vent 215 x 90mm - Car Builder Solutions
    Out Of Stock

    Moulded ABS Vent 215 x 90mm

    Durable, low-profile ABS vent, ideal for flat or curved surfaces. Easy installation. 215mm x 90mm.
    £9.60
    £0.00
    £9.60
    (-0%)
    Out Of Stock
  • Steel Vents Pair 233mm - Car Builder Solutions

    Steel Vents Pair 233mm

    Sold as a pair LEFT HAND and RIGHT HAND
    £38.40
    £0.00
    £38.40
    (-0%)
  • Lightweight Internal Naca Duct Carbon Effect 220mm - Car Builder SolutionsLightweight Internal Naca Duct Carbon Effect 220mm - Car Builder Solutions
    Out Of Stock

    Lightweight Internal Naca Duct Carbon Effect 220mm

    Can be bonded or riveted to body.
    £14.40
    £0.00
    £14.40
    (-0%)
    Out Of Stock
  • Naca Duct Large Clear 210mm - Car Builder SolutionsNaca Duct Large Clear 210mm - Car Builder Solutions

    Naca Duct Large Clear 210mm

    Durable, clear ABS NACA duct for versatile mounting. Ideal for various applications. Available trimmed or untrimmed. Dimensions: 210mm x 40mm x 145mm.
    £16.80
    £0.00
    £16.80
    (-0%)
  • Naca Duct Carbon Effect Large - Car Builder SolutionsNaca Duct Carbon Effect Large - Car Builder Solutions

    Naca Duct Carbon Effect Large

    Can be bonded or riveted to body. 235mm x 190mm x 45mm high.
    £16.80
    £0.00
    £16.80
    (-0%)
  • Cold Air Ram Ducts 96mm - Car Builder SolutionsCold Air Ram Ducts 96mm - Car Builder Solutions

    Cold Air Ram Ducts 96mm

    Lightweight spun aluminium cold air ram ducts for efficient engine or brake cooling. 96mm OD hose connection, 140mm maximum diameter. Sold as a pair.
    £16.80
    £0.00
    £16.80
    (-0%)
  • Demist Vent 130 mm x 26mm - Car Builder SolutionsDemist Vent 130 mm x 26mm - Car Builder Solutions

    Demist Vent 130 mm x 26mm

    Fits into a 100mm x 18mm rectangular hole.
    £4.20
    £0.00
    £4.20
    (-0%)
  • Naca Duct Small Clear 165mm - Car Builder SolutionsNaca Duct Small Clear 165mm - Car Builder Solutions

    Naca Duct Small Clear 165mm

    A clear, vacuum-moulded ABS NACA duct. Ideal for internal or external bonding/riveting. Measuring 165x21x155mm (excluding flange).
    £14.40
    £0.00
    £14.40
    (-0%)
  • 2 Piece Rectangular Vent 145mm x 52mm - Car Builder Solutions2 Piece Rectangular Vent 145mm x 52mm - Car Builder Solutions

    2 Piece Rectangular Vent 145mm x 52mm

    Ideal for de-mist and/or dash.
    £19.20
    £0.00
    £19.20
    (-0%)
  • 73mm Panel Vent - Car Builder Solutions73mm Panel Vent - Car Builder Solutions

    73mm Panel Vent

    73mm rotating panel air vent with adjustable airflow. Durable ABS, fits 68mm hole. Lightweight at 20g.
    £4.80
    £0.00
    £4.80
    (-0%)
  • Large GRP Naca Bulge 440mm - Car Builder Solutions
    Out Of Stock

    Large GRP Naca Bulge 440mm

    Moulded GRP NACA duct bulge. 3mm thick. Duct size: 300mm x 440mm. Overall size: 440mm x 600mm x 40mm.
    £45.60
    £0.00
    £45.60
    (-0%)
    Out Of Stock
  • Cold Air Ram Ducts RED 96mm - Car Builder SolutionsCold Air Ram Ducts RED 96mm - Car Builder Solutions

    Cold Air Ram Ducts RED 96mm

    Ideal for ducting air to air filter or brakes.
    £4.80
    £0.00
    £4.80
    (-0%)
  • Cold Air Ram Ducts BLUE 96mm - Car Builder SolutionsCold Air Ram Ducts BLUE 96mm - Car Builder Solutions

    Cold Air Ram Ducts BLUE 96mm

    Ideal for ducting air to air filter or brakes.
    £4.80
    £0.00
    £4.80
    (-0%)
  • Eyeball Dash Vent Chrome 69mm - Car Builder SolutionsEyeball Dash Vent Chrome 69mm - Car Builder Solutions

    Eyeball Dash Vent Chrome 69mm

    69mm chrome eyeball dash vent with directional vane. Fits 63mm hole, ideal for precise airflow control. Stylish and easy to install.
    £16.80
    £0.00
    £16.80
    (-0%)

Cabin Comfort Starts with the Right Components

Whether you're adding heat to a classic car or plumbing in a full HVAC system, this collection offers modular parts to route air and control temperature. Most components are universal, compact, and built to withstand engine bay temperatures.

Featured Products in This Collection

System Categories Included

  • Heater and A/C hose joiners, reducers, and elbows
  • Air vents, diverters, and fascia trim
  • Rotary fan switches and relay blocks
  • Bulkhead fittings and O-ring-sealed connections

Useful Videos

Air Conditioning How To Install In Your Car

Designed for comfort, simplicity, and serviceability — all available for next day delivery.