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B&M 20234 Adjustable Vacuum Modulator
✅ In stock
📉 Price recently dropped
F
Grade
Analysis Confidence
100%
⚠️ Price may have changed. Last updated 24+ hours ago — confirm on Amazon.
Check Deal at Amazon
Price verified Sep 20, 2026 6:44 AM · Prices & availability subject to change
Is This a Good Price on Amazon?
💤 Not a Deal- 💤Verdict: Not a Deal. Price is at or above historical norms. Best to wait for a sale.
- 💰At 22% above its usual rate, this is currently priced higher than what most shoppers have paid.
- 🏷️The listed retail price is trimmed by 6% at checkout.
- 📉It has been quite a while since a more competitive price was available, lending today's offer solid comparative value.
- 📈The direction is downward at the moment; if that holds, an even better price may surface — though timing the market is never certain.
How We Scored This Deal
Price Competitiveness
0/28
Recent Value
4.01/22
Market Standing
3.08/20
Deal Strength
0/20
Momentum
10/10
📝 Product Overview
🏪 Sold by
Holley Performance Product
🚚 Shipping
Free Shipping
Product Details
✓Vacuum modulator is fully adjustable to custom tailor your shift points (within 2-4 mph)
✓Comes pre-adjusted for normal shift points to get you started
✓Applications include GM TH350 and TH400 transmissions
✓Genuine B&M accessory
✓Backed by the manufacturer with a 1 year limited warranty
⚙️ Specifications
Material
Plastic
Brand
B&M
Exterior Finish
Per Item Description
Inlet Connection Size
0.25 inches
Inlet Connection Type
Vacuum line
Outlet Connection Type
Flare
Outlet Connection Size
0.25 inches
Global Trade Identification Number
00019695202347
Manufacturer
B&M
UPC
019695202347
Model
B&M 20234 Adjustable Vacuum Modulator