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DormanPart #: M39869
Dorman M39869 Brake Master Cylinder
⚙️ 7 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$187.74Free 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.
🔥
✅ In Stock · Ready To Ship
Most orders ship same-day if ordered before 1pm CST.
✅OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Pontiac, LeMans
🔄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
Dorman M39869 Brake Master Cylinder
| Brand | Dorman |
| Part Number | M39869 |
| Mounting Hardware Included | No |
| Master Cylinder Bore Diameter | 0.875 |
| Master Cylinder Material | Aluminum |
| Reservoir Included | No |
| Sensor Included | No |
| Number of Outlets | 4 |
| Package Contents | Master cylinder |
| Rearward Outlet Size | M10 x 1.0; m15 x 1.0 |
| Secondary Outlet Thread Diameter | M12 x 1.0; m15 x 1.0 |
This part fits 7 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 1993 | Pontiac | LeMans | N/A | Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder. | ||
| 1992 | Pontiac | LeMans | N/A | Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder. | ||
| 1991 | Pontiac | LeMans | N/A | Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder. | ||
| 1990 | Pontiac | LeMans | 2.0L | L4 | N/A | Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder. |
| 1990 | Pontiac | LeMans | 1.6L | L4 | N/A | Bore: 7/8 In.; Stamped 2631 on Booster |
| 1989 | Pontiac | LeMans | 2.0L | L4 | N/A | Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder. |
| 1989 | Pontiac | LeMans | 1.6L | L4 | N/A | Bore: 7/8 In.; Stamped 2631 on Booster |
* 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:
11-25611251613-2561130.3600218M478349236283-78002F140454M-13002M52561M900685MC39869MC511050
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.