Gates
Emission Control Hose

Gates EMH251 Engine Crankcase Breather Hose - EGR Valve Vacuum Hose

Brand Gates EMH251
Position EGR Valve Vacuum Hose
0
No
Yes
Branch Quantity 3
Centerline Length 2
Centerline Length 51
Centerline Length (in) 2
Centerline Length (mm) 51
End 1 Type Push In
End 2 Type Push In
End 3 Type Push In
End 4 Type Push In
End 5 Type Push In
End Type Push In
Hardware Included No
Hardware Included No
Hose Quantity 1
Inside Diameter .171
Inside Diameter .21
Inside Diameter .225
Inside Diameter .4
Inside Diameter 4
Inside Diameter 5
Inside Diameter 6
Inside Diameter 10
Inside Diameter 1 (in) .4
Inside Diameter 1 (mm) 10
Inside Diameter 2 (in) .225
Inside Diameter 2 (mm) 6
Inside Diameter 3 (in) .171
Inside Diameter 3 (mm) 4
Inside Diameter 4 (in) .21
Inside Diameter 4 (mm) 5
Material Plastic
Material Plastic
Molded Yes
Number of Branches 3
Number of Hoses 1
Number of Quick Connectors 0
OE Comparison Rating OE Exact
PCV Valve No
Protective Sleeve Yes
Protective Sleeve Included Yes
Product line Emission Control Hose
Fits Ford and Mercury · 18 vehicles

OE-exact replacement. Restores crankcase ventilation and emission control performance.

Molded plastic design. Built for durability and maximum service life.

Three-branch hose. Supports multiple connections in one compact assembly.

Cross-references Gates EMH251, 5L2Z 9E498 AA and 5L2Z 9E498 BA for the same application. See all 4.

$72.47Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.

Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Order total $72.47
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.

OE-Exact Crankcase Breather Hose

Gates EMH251 is an OE-exact engine crankcase breather hose for emission control service. Built from molded plastic with push-in ends and a protective sleeve, it is made to restore proper crankcase ventilation and emission system operation on select Ford and Mercury applications.

Compatible with 2005-2010 Ford Explorer, EGR valve vacuum hose position; 2007-2010 Ford Explorer Sport Trac, EGR valve vacuum hose position; and 2005-2010 Mercury Mountaineer, EGR valve vacuum hose position. This Gates Emission Control Hose line focuses on direct-fit replacement parts that follow original equipment dimensions and routing.

Key Features

  • Gates EMH251 emission control hose for crankcase ventilation service
  • OE Exact comparison rating for direct replacement fit and function
  • Molded plastic construction for the specified routing and shape
  • Push-in end design for factory-style connection points
  • Protective sleeve included for added abrasion resistance
  • Designed for EGR valve vacuum hose applications within the emission control system
  • Cross-reference application support for 5L2Z 9E498 AA, 5L2Z 9E498 BA, and 6L2Z 9E498 A

Product Details

The EMH251 is a molded crankcase breather hose with multiple branch connections and OE-exact dimensions, including 10 mm, 6 mm, 4 mm, and 5 mm inside diameters where specified. Its 51 mm centerline length and push-in end configuration help it match the original routing used in the emission control system. For Ford Explorer, Ford Explorer Sport Trac, and Mercury Mountaineer models, this hose is intended to restore proper vacuum and ventilation flow at the EGR valve hose location.

Common Issues This Hose Can Address

  • Cracked or brittle emission hose material
  • Vacuum leaks at the EGR valve hose routing
  • Improper crankcase ventilation flow
  • Emission system performance concerns caused by a damaged hose
  • Fitment problems from non-OE-shaped replacement hoses

Installation Notes

Verify the hose routing, branch layout, and end style against the original part before installation. Confirm the vehicle application by year, make, model, and EGR valve vacuum hose position on the Ford Explorer, Ford Explorer Sport Trac, or Mercury Mountaineer. Inspect adjoining vacuum lines and connectors for wear so the replacement hose seals correctly after installation.

Quality Assurance

Gates builds the Emission Control Hose line with OE-exact replacement intent and durable materials to support long service life in emission system service. EMH251 is engineered to restore the original hose function and maintain the factory-style fit expected for these applications.

This part fits 18 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersFuel TypePositionNotes
2010FordExplorer4.0LV6GASEGR Valve Vacuum HoseEmission Control Hose
2010FordExplorer Sport Trac4.0LV6GASEGR Valve Vacuum HoseEmission Control Hose
2010MercuryMountaineer4.0LV6GASEGR Valve Vacuum HoseEmission Control Hose
2009FordExplorer4.0LV6GASEGR Valve Vacuum HoseEmission Control Hose
2009FordExplorer Sport Trac4.0LV6GASEGR Valve Vacuum HoseEmission Control Hose
2009MercuryMountaineer4.0LV6GASEGR Valve Vacuum HoseEmission Control Hose
2008FordExplorer4.0LV6GASEGR Valve Vacuum HoseEmission Control Hose
2008FordExplorer Sport Trac4.0LV6GASEGR Valve Vacuum HoseEmission Control Hose
2008MercuryMountaineer4.0LV6GASEGR Valve Vacuum HoseEmission Control Hose
2007FordExplorer4.0LV6GASEGR Valve Vacuum HoseEmission Control Hose
2007FordExplorer Sport Trac4.0LV6GASEGR Valve Vacuum HoseEmission Control Hose
2007MercuryMountaineer4.0LV6GASEGR Valve Vacuum HoseEmission Control Hose
2006FordExplorer4.0LV6GASEGR Valve Vacuum HoseEmission Control Hose
2006MercuryMountaineer4.0LV6GASEGR Valve Vacuum HoseEmission Control Hose
2005FordExplorer4.0LV6FLEXEGR Valve Vacuum HoseEmission Control Hose
2005FordExplorer4.0LV6GASEGR Valve Vacuum HoseEmission Control Hose
2005MercuryMountaineer4.0LV6FLEXEGR Valve Vacuum HoseEmission Control Hose
2005MercuryMountaineer4.0LV6GASEGR Valve Vacuum HoseEmission Control Hose
Directly replaces or cross-references 4 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Gates — EMH2515L2Z 9E498 AA5L2Z 9E498 BA6L2Z 9E498 A