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Extracting corroded, heat-sealed, or leaking copper and stainless steel unit injector sleeve cups on Mack MP7, MP8, MP9, MP10 or Volvo FM12 and D11/D13/D16 heavy-duty diesel engines? Attempting to pry out stubborn injector cups using slide hammers, improvised collets, or cold chisels creates severe mechanical risks. Slipping tools gouge precision cylinder head injector bores, drop copper metal shrapnel deep into coolant passages, and damage delicate lower sealing ledges. An un-centered puller distorts the sleeve wall, locking it tighter into the cylinder head. Engineered for commercial diesel repair facilities and fleet overhaul stalls as a direct USA-made replacement for Volvo/Mack OEM 88800387 and 88800196, the ATC 88800387 Replacement Cup Puller expands 360-degrees inside the lower cup lip, applying uniform axial force to extract stainless steel and copper injector sleeves cleanly without scoring cylinder head bores.

The Critical Physics of Injector Sleeve Extraction & Cylinder Head Bore Protection

Heavy-duty Mack MP-Series (MP7, MP8, MP9, MP10) and Volvo FM12 / D-Series commercial engines utilize unit fuel injectors seated inside thin-walled copper or stainless steel sleeves. These sleeves pass through the engine cylinder head water jacket, isolating high-pressure fuel injectors from engine coolant. Over extended operation, thermal cycling, carbon buildup, and coolant corrosion press-fit the sleeve tightly against the internal cylinder head counterbore. When internal sleeve o-rings age, combustion gases blow back into the coolant system or diesel fuel contaminates engine oil. Replacing these cups requires extracting the old sleeve without scratching the internal aluminum or cast-iron cylinder head seating bore. Standard generic pullers slip off thin sleeve edges or apply cocked extraction forces that bind the sleeve against the bore wall. The ATC 88800387 Master Replacement Cup Puller completely eliminates these extraction risks. Machined from high-tensile heat-treated tool steel, this 2.00-pound precision extraction collet expands evenly against the inner lip of the sleeve. As the central forcing arbor is driven, the puller distributes 360-degree parallel mechanical lift, popping the sleeve free from its press-fit seating groove without tilting or scratching surrounding head metal.

• Targeted Mack & Volvo Engine Coverage – Purpose-built specifically for injector sleeve tube extraction on Mack MP7, MP8, MP9, MP10, and Volvo FM12, D11, D13, D16 diesel engines.
• Direct OEM Factory Tool Interchange – Precision-machined functional replacement for Volvo / Mack OEM specialty tool part numbers **88800387** and **88800196** (ATC88800387 / 88800387 / 88800196).
• Protects Precision Cylinder Head Bores – Applies perfectly balanced 360-degree internal expansion to pull cups without gouging delicate head metal or scoring sealing shoulders.
• Extracts Stainless Steel & Copper Sleeves – Engineered with high-hardness gripping teeth to bite securely into both stainless steel and traditional copper injector cups.
• Essential Commercial Fleet Overhaul Asset – Eliminates costly cylinder head replacements, prevents coolant contamination, and streamlines fuel system overhaul workflows.

Stop Gouging Cylinder Head Bores. Command Total Mack & Volvo Injector Service Precision.

The ATC 88800387 Replacement Cup Puller for Mack Volvo injector sleeve Cups is an essential capital asset for commercial truck repair centers, Volvo/Mack dealership service bays, fleet maintenance facilities, and heavy diesel rebuilders. Prevent cylinder head scoring, eliminate extraction slippage, and service injector cups with complete mechanical authority using Apex tools.

Technical Specifications

Technical Metric	Value / Fitment Reference Guidelines
Target Engine Platforms	Mack MP7, MP8, MP9, MP10 and Volvo FM12, D11, D13, D16 Diesel Engines
Primary Operational Function	Non-destructive extraction of copper and stainless steel injector sleeve cups
Specialty Tool Cross Reference	Direct replacement for Volvo / Mack OEM 88800387 and 88800196
Part / Model Reference Number	ATC 88800387 (ATC88800387 / 88800387)
Construction Metallurgy	High-tensile precision-machined heat-treated alloy tool steel
Total Package Shipping Weight	2.00 lbs (Compact, professional heavy-duty shop extraction tool)

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