One of the most common questions Black Series owners ask is simple: will this part fit my model? Across the HQ range — HQ12, HQ15, HQ17, HQ19/HQ19T, HQ21/HQ21B, and HQ22T — some parts are shared and some are model-specific. This guide breaks it down by category so you can order with confidence.
Jump straight to your model: HQ12 · HQ15 · HQ17 · HQ19 & HQ19T · HQ21 & HQ21B · HQ22T. Or browse the full Black Series parts hub.
Why fitment matters on Black Series trailers
Black Series builds several floorplans and has revised components across production years. Two trailers that look similar can use different window sizes, door dimensions, or cabinet hardware. The safest approach is always to match a part to both your model and your model year, and to measure before you buy.
Shared vs model-specific: a category guide
| Part category | Generally shared? | What to check |
|---|---|---|
| Suspension, brakes, hubs | Often shared | Independent suspension components are common across models; confirm axle/rating |
| Windows | Size-specific | Measure the opening (mm) - sizes vary by model and year |
| Entrance & storage doors | Size-specific | Match dimensions and hinge side |
| Electrical, solar, 12V | Mostly universal | Most Victron and 12V gear fits any model |
| Appliances (fridge, A/C, heater) | Often shared | Confirm cut-out size and voltage |
| Interior furniture & cabinetry | Model-specific | Depends on floorplan - varies most across models |
| Water pumps, tanks, fittings | Often universal | Confirm tank size/fitting type |
How to identify your model and year
- Check the compliance/VIN plate on the trailer (usually on the A-frame or door jamb).
- Note the model code (e.g. HQ19) and the build year.
- For size-specific parts, measure the existing component before ordering.
- Still unsure? Send us your VIN and a photo and we'll confirm the right part.
Universal upgrades that fit any HQ
Electrical and off-grid power gear is the most cross-compatible category. A Victron inverter/charger, lithium batteries, or solar charge controllers will work on essentially any Black Series build — see our MultiPlus vs Quattro guide to choose.
Frequently asked questions
Are HQ19 and HQ19T parts the same?
Most exterior and mechanical parts are shared. Interior items tied to the floorplan (furniture, some cabinetry) can differ.
Can I use an HQ21 window on an HQ17?
Only if the measured dimensions and shape match. Go by the size on the product page, not the model name.
What's the most cross-compatible category?
Electrical, solar, and 12V power — most of it fits any HQ model regardless of year.
Find your model's parts: HQ12, HQ15, HQ17, HQ19, HQ21, HQ22T. Ships from Upland, CA.