06039B vs BS213-022: Which Redcat Part Fits Your Build?

Quick Answer

06039B and BS213-022 are not interchangeable. Choose 06039B only if your Redcat parts diagram or manual lists it for your exact model; otherwise BS213-022 is the correct fit. Always verify your vehicle's exploded view before ordering, because RC car parts comparison hinges on fitment, not similarity.

If you're staring at two part numbers and wondering which one belongs in your Redcat, you're not alone. The 06039B vs BS213-022 question comes up because both are legitimate Redcat vehicle parts, but they serve different chassis generations or assemblies.

This comparison sticks to what the catalog actually tells us and how to make a confident decision. You won't find invented specs here—just practical guidance on using fitment data, build goals, and real Redcat replacement parts like RER30384 and RER17702 as reference points for how the catalog organizes components.

Why These Two Part Numbers Get Confused

Redcat has used multiple part-numbering schemes over the years, and older models sometimes share visual similarities with newer ones. 06039B and BS213-022 may look alike in photos or have similar mounting patterns, but that doesn't mean they swap. The only reliable test is your specific vehicle's parts list.

When you compare Redcat parts, start with the exploded view in your manual or the model-specific parts diagram. If 06039B appears there, it's the right call. If BS213-022 appears, use that. If neither appears, you may be looking at a part for a different chassis entirely.

• Check the parts diagram first—never assume based on appearance alone.
• Note your model number and version; Redcat often updates parts mid-production.

How to Read Fitment Without Guessing

Fitment is about more than screw holes. Consider the surrounding assembly: does the part interact with the center skid plate, differential gear box, or axle mount blocks? Those interfaces determine whether a part will work even if it bolts on. For example, RER30384 is a center skid plate, and RER17702 is a front/rear differential gear box assembly—each has a specific role that affects what else can mount nearby.

If you're upgrading or repairing, map out the whole area. A part that fits physically might not clear the driveshaft, battery holder, or ESC plate. Redcat's catalog lists components like RER15051 (ESC plate, magnet holder, battery holder set) separately for this reason: they're part of a system, not isolated pieces.

• Trace the assembly: what mounts to the part, and what mounts near it?
• Look for sets and assemblies that include multiple related pieces.

When to Choose 06039B or BS213-022

Choose 06039B if your manual or parts diagram explicitly lists it for your model. This is the safest path for a stock replacement or a like-for-like repair. If you're working on a newer Redcat and the diagram shows BS213-022, that's your part—no debate needed.

If you're modifying your vehicle, fitment becomes even more critical. Aftermarket upgrades may require different mounting points or clearances. In that case, compare the part's function in the assembly. For instance, if you're replacing axle mount blocks, RER23597 (plastic, with bridge) might be the correct interface, and using the wrong part number could bind the suspension.

• Stock repair: match the exact number from your diagram.
• Custom build: verify clearance and interface with neighboring parts.

The Role of Hardware and Small Parts

Don't overlook fasteners. A part might fit perfectly but require specific screws. Redcat lists items like 14582 (3x14mm button head hex machine thread screws, 10pcs) separately, and using the wrong length or thread can strip plastic or fail to secure metal. If your replacement part doesn't include hardware, check the diagram for the correct screw size.

Similarly, small mounts like 505520BK (front supporting mount, black) can be model-specific. A mount that looks similar might have a different offset or thickness, causing misalignment. Always cross-reference the part number, not just the shape.

• Reuse hardware only if it's in good condition and matches the diagram.
• When in doubt, order the hardware set alongside the main part.

Trade-Offs at a Glance

• Fitment certainty vs. upgrade potential: 06039B is the safe choice if it's listed for your model; BS213-022 may open upgrade paths but only if your chassis accepts it. Prioritize fitment unless you're deliberately modifying.
• Stock replacement vs. assembly swap: Replacing a single part like 06039B is cheaper and simpler; swapping a whole assembly like RER17702 can fix multiple wear points at once. Inspect all related parts before deciding.
• Hardware reuse vs. fresh fasteners: Reusing screws like 14582 saves money but risks stripped threads; new hardware adds cost but ensures proper torque. Replace hardware if it shows any wear.

Catalog Facts That Guide the Decision

• RER30384: Center Skid Plate (Aluminum)(Red)(1pc) Shows how Redcat lists material and color—useful when checking if a part matches your build's finish and strength needs.
• RER17702: F/R Differential Gear Box Assembly (1pc) Demonstrates that some parts are complete assemblies, which can simplify repairs but may not fit if your model uses a different diff design.
• RER15051: ESC Plate, Magnet Holder, Battery Holder(1set) Illustrates that Redcat groups related components; buying the set ensures compatibility across those three items.
• RER23597: Axle Mount Blocks w/ Bridge(Plastic)(1set) Shows material (plastic) and included bridge—important for suspension tuning and durability expectations.

Which One Should You Order?

Best for

• 06039B: owners whose manual or parts diagram lists it for their exact Redcat model
• BS213-022: owners whose diagram specifies it, especially for newer or updated chassis versions

Not for

• 06039B: vehicles that require BS213-022 or a different part number entirely
• BS213-022: older models that predate its introduction or use a different mounting system

The right choice between 06039B and BS213-022 comes down to your specific vehicle's parts diagram. Use the catalog facts as a guide, verify fitment, and don't guess. When in doubt, consult your manual or contact Redcat support—getting the correct RC replacement part the first time saves money and downtime.