Magnus Ductile Iron Engine Sleeves for McLaren 4.0L V8 STMREVAMP (1) Valve Stem

(1) Valve Stem

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Magnus Ductile Iron Engine Sleeves for McLaren 4.0L V8 STMREVAMP (1) Valve StemMagnus Motorsports McLaren 4. 0L ductile iron engine sleeves help resist deformation under high boost and high combustion loads. Sold as a full set of 8 sleeves. Vehicle Fitment: McLaren 3. 8L & 4. 0L V8 Twin Turbo M838T: 625C, 650S, 675LT, MP4 12C, MSO 688 HS M838TE: 540C, 570S, 570GT, 600LT, 620R M840T: 720S, 750S, 765LT, Senna, Elva, Speedtail, Sabre M840TE: GT, GTS 4. 0L Replacement: These sleeves are a drop in upgrade for the 4. 0L M840T and