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MPA ElectricalPart #: M1678
MPA Electrical M1678 Brake Master Cylinder
⚙️ 4 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$84.44Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
🛡️60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
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✅ In Stock · Ready To Ship
Most orders ship same-day if ordered before 1pm CST.
✅OE Direct Replacement — Bolt-on fit, no modifications needed
📦Reman with front disc brakes
🚗Fitment: Jeep, CJ5 and CJ7
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST
Not what you need? Click here for all Brake Master Cylinder options
MPA Electrical M1678 Brake Master Cylinder
| Brand | MPA Electrical |
| Part Number | M1678 |
| Position | Reman with front disc brakes |
| Reservoir Material | Integral |
| Mounting Hardware Included | No |
| Grade Type | Standard replacement |
| Gasket Or Seal Included | No |
| Mounting Hole Quantity | 2 |
| Master Cylinder Bore Diameter | 1.063 |
| Brake Booster Included | No |
| Master Cylinder Cap Included | Yes |
| Master Cylinder Material | Cast iron |
| Push Rod Included | No |
| Reservoir Included | Yes |
| Sensor Included | No |
| Mounting Hole Diameter | 0.424 |
| Mounting Bracket Included | No |
| Brake Pressure Switch(s) Included | No |
| Fluid Type | Dot 3 |
| Product Condition | Remanufactured |
This part fits 4 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 1978 | Jeep | CJ5 | N/A | Reman with front disc brakes |
| 1978 | Jeep | CJ7 | N/A | Reman with front disc brakes |
| 1977 | Jeep | CJ5 | N/A | Reman with front disc brakes |
| 1977 | Jeep | CJ7 | N/A | Reman with front disc brakes |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
4796476
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.