
MSD 8737 Three Step Module Selector
Price as of 2026-06-20. Check Amazon for the current price.
Quick Decision
Price Intelligence
- Budget:$6–$18
- Mid-range:$18–$61
- Premium:$61+← You are here
Is This Right For You?
- •Buyers who prioritize quality over price in switches and relays
- •Those who want a top-rated option — in the top 1% of switches and relays by rating
- •You're on a tight budget — $116 above the category average of $54
- •You prefer well-established products — only 13 reviews, so the rating may still shift
📊 Based on data analysis of 51 products in this category.
Mubboo Score: C+
How we calculate the Mubboo Score
Quality (45%): customer rating, normalized to a 10-point scale
Popularity (35%): review volume vs the category leader, log-scaled
Value (20%): price position vs other switches and relays
Computed from live Amazon rating, review count, and price across 51 switches and relays available to US consumers · last refreshed 2026-06-20.
What People Say
Synthesized from 32 reviews · 100% verified purchases.
Verify relay compatibility with your vehicle's socket and specs, and check if required accessories like fuses are included before purchasing.
- High quality and reliability
- Perfect fit and direct replacement
- Significant cost savings over OEM or dealer repair
- Effectively solved electrical problems
- Fitment or compatibility issues with certain vehicles
- Missing components or misleading product photos
Related Video Reviews
- 📹 Smart Light Switches: I'm rethinking EVERYTHING! — Smart Home Solver
- 📹 Shelly Smart Home: Relays - Selection and Installation — Smarter Circuits
- 📹 The Best Standalone Smart Switch at Every Price Point In 2026 — Tom's Smart Home
About MSD
- 3 products in our database
- Average rating: 4.7/5 across all products
- Price range: $33.80 – $170.05
- Categories: lockout-kits, switches-and-relays
If not the 8737 Three Step Module Selector, consider these

Bottom Line
MSD 8737 Three Step Module Selector earns Mubboo Score C+. Priced at $170 — a premium option, above the category average of $54. Rated 5.0/5 from 13+ reviews. Strong buy if: buyers who prioritize quality over price in switches and relays, those who want a top-rated option. Worth a second thought if you're on a tight budget.
Frequently Asked Questions
Is the MSD 8737 Three Step Module Selector worth buying in 2026?
It earns a Mubboo Score of C+, with a 5.0/5 rating from 13 reviews — better than 100% of switches and relays we track.
How much does the MSD 8737 Three Step Module Selector cost?
It is currently $170.05 — premium-tier pricing for switches and relays.
Sources & References
Products available through US retailers. Prices in USD. Sales tax varies by state and is not included.
Mubboo may earn a commission on purchases made through affiliate links. This does not affect our Mubboo Score, product rankings, or editorial judgments. Prices are accurate as of the last sync (2026-06-20) and may change.