Bendix K021557 SR-7 Spring Brake Modulating Valve
Mfr #: K021557BB #: bendix-k021557-bendix-k021557-sr-7-spring-brake-modulating-valve
Last verified Oct 2, 2026 — price check expired
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Check current price✓Delivery: Standard shipping
✓Returns: Standard returns
⇄ Vendor prices
| Vendor | Price | Shipping |
|---|---|---|
| Duallane Truck Parts | $284.18 | Free |
| BuyParts.Online | $371.42 | Qualifies towards free shipping |
Prices observed across vendors — click a vendor’s name to verify the price on their own page before ordering.
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🗎 Product description from the manufacturer spec sheet
Genuine Bendix K021557 SR-7 spring brake modulating valve for dual air brake systems — spring brake hold-off pressure 107 psi, anti-compounding design, FMVSS 121 compliant. Exhaust port with dust shield, 3/8-16 UNC-2A mounting studs (0.94 in), NPT supply/control/delivery ports; operating temperature -40°F to 200°F. No core charge.
▦ Specifications spec-checked before it ships
Exhaust
- Exhaust Port Type
- Dust Shield
- Exhaust Orientation
- Exhaust Facing Down
Mounting
- Mounting Thread Size
- 3/8-16 UNC-2A in
- Mounting Stud Length
- 0.94 in
More specifications
- Weight
- 1.41 kg
- Spring Brake Hold-Off Pressure
- 107 psi
- Anti-Compounding
- Yes
- Regulatory Compliance
- FMVSS 121
- Supply Port Thread Size
- 1/2-14 NPT in
- Control Port Thread Size
- 1/4-18 NPT in
- Balance Port Thread Size
- 1/4-18 NPT in
- Park Control Port Thread Size
- 1/4-18 NPT in
- Delivery Ports
- 4 x 3/8-18 NPT in
- Minimum Operating Temperature
- -40 Deg. F
- Maximum Operating Temperature
- 200 Deg. F
- Dimensions (L x W x H)
- 105 mm x 137 mm x 124 mm
- For Dual Air Brake Systems
- Yes
- Core Charge
- None
⌗ Cross-references every known SKU, MFR & MPN
MPNK021557