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Main Caps

Main Caps are key to engine performance and reliability. Explore our premium selection built for horsepower, torque, and longevity under extreme conditions.

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$684.20 - $684.20
$684.20
$684.20 - $684.20
$684.20
+ GST

Rocket Pro-Gram Engineering 2 Bolt Steel Main Cap (RPMWH308R)

RPMWH308R - STEEL REAR MAIN CAP 308 ROPERear Cap - Rope Seal, suit Holden V8 253-308-355-5.0. Made in USAPart Number: RPMWH308RPro-Gram Engineering...

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$684.20 - $684.20
$684.20
$684.20 - $684.20
$684.20
+ GST
Contact for availability
Rocket Pro-Gram Engineering 2 Bolt Steel Main Cap (RPMWH308F) RPMWH308F Contact for availability
$251.40 - $251.40
$251.40
$251.40 - $251.40
$251.40
+ GST

Rocket Pro-Gram Engineering 2 Bolt Steel Main Cap (RPMWH308F)

Front Cap, suit Holden V8 253-308-355-5.0. Made in USA

M & W STEEL FRONT CAP 253-308Front Cap, suit Holden V8 253-308-355-5.0. Made in USAPart Number: RPMWH308F Pro-Gram Engineering 2-Bolt steel ma...

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$251.40 - $251.40
$251.40
$251.40 - $251.40
$251.40
+ GST
Contact for availability
Rocket Pro-Gram Engineering 4 Bolt Steel Main Caps (RPMWH308CFA) RPMWH308CFA Contact for availability
$747.00 - $747.00
$747.00
$747.00 - $747.00
$747.00
+ GST

Rocket Pro-Gram Engineering 4 Bolt Steel Main Caps (RPMWH308CFA)

RPMWH308CFA - M&W CENTRE 3 MAIN CAPS 253-3083 Center Splayed Caps, suit Holden V8 253-308-355-5.0. Made in USAPart Number: RPMWH308CFAPro-Gram ...

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$747.00 - $747.00
$747.00
$747.00 - $747.00
$747.00
+ GST
Contact for availability
Rocket Billet Main Caps (RPMW2JZ-GTE) RPMW2JZ-GTE
$1,666.20 - $1,666.20
$1,666.20
$1,666.20 - $1,666.20
$1,666.20
+ GST

Rocket Billet Main Caps (RPMW2JZ-GTE)

Suit Toyota 2JZ-GTE

BILLET MAIN CAP SET 2JZSuit Toyota 2JZ-GTEPart Number: RPMW2JZ-GTE Billet main bearing caps to suit Toyota 2JZ-GTE manufactured by Pro-Gram engine...

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$1,666.20 - $1,666.20
$1,666.20
$1,666.20 - $1,666.20
$1,666.20
+ GST
Moroso Main Cap Girdle (MO22928) MO22928
$717.60 - $717.60
$717.60
$717.60 - $717.60
$717.60
+ GST

Moroso Main Cap Girdle (MO22928)

Suit Ford289-302

MOROSO FORD 302W MAIN CAP GIRDSuit Ford289-302Part Number: MO22928 Manufactured from 1/2" thick steel Girdle to be profiled to fit over engine ...

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$717.60 - $717.60
$717.60
$717.60 - $717.60
$717.60
+ GST
Milodon Holden 253-308 4 Bolt Main Cap Set (MI11570) MI11570
$851.40 - $851.40
$851.40
$851.40 - $851.40
$851.40
+ GST

Milodon Holden 253-308 4 Bolt Main Cap Set (MI11570)

(Angle Side Bolts)

HOLDEN 253 304 308 4 BOLT MAIN(Angle Side Bolts)Part Number: MI11570 These aftermarket main caps will strengthen not only factory 2 bolt blocks, b...

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$851.40 - $851.40
$851.40
$851.40 - $851.40
$851.40
+ GST
Milodon BB Ford 429-460 4 Bolt Main Cap Set (MI11450) MI11450
$1,106.80 - $1,106.80
$1,106.80
$1,106.80 - $1,106.80
$1,106.80
+ GST

Milodon BB Ford 429-460 4 Bolt Main Cap Set (MI11450)

(Angled Side Bolts)

BB FORD 429 460 4 BOLT MAIN(Angled Side Bolts)Part Number: MI11450 These aftermarket main caps will strengthen not only factory 2 bolt blocks, but...

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$1,106.80 - $1,106.80
$1,106.80
$1,106.80 - $1,106.80
$1,106.80
+ GST
Milodon Ford 351 Cleveland 4 Bolt Main Cap Set (MI11440) MI11440
$1,064.30 - $1,064.30
$1,064.30
$1,064.30 - $1,064.30
$1,064.30
+ GST

Milodon Ford 351 Cleveland 4 Bolt Main Cap Set (MI11440)

Suit Ford 302-351C (Angled Side Bolts)

FORD 351 CLEVELAND 4 BOLT MAINSuit Ford 302-351C (Angled Side Bolts)Part Number: MI11440 These aftermarket main caps will strengthen not only fact...

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$1,064.30 - $1,064.30
$1,064.30
$1,064.30 - $1,064.30
$1,064.30
+ GST
Milodon BB Chev 4 Bolt Main Cap Set (Angled) (MI11200)
Milodon BB Chev 4 Bolt Main Cap Set (Angled) (MI11200) MI11200
Contact for availability
$993.30 - $993.30
$993.30
$993.30 - $993.30
$993.30
+ GST

Milodon BB Chev 4 Bolt Main Cap Set (Angled) (MI11200)

Suit 396-454, 2 or 4 Bolt Blocks (Angled Side Bolts)

BB CHEV 396 454 4 BOLT MAINSuit 396-454, 2 or 4 Bolt Blocks (Angled Side Bolts)Part Number: MI11200 These aftermarket main caps will strengthen no...

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$993.30 - $993.30
$993.30
$993.30 - $993.30
$993.30
+ GST
Contact for availability
Milodon SB Chev 4 Bolt Main Cap Set (MI11165)
Milodon SB Chev 4 Bolt Main Cap Set (MI11165) MI11165
$752.10 - $752.10
$752.10
$752.10 - $752.10
$752.10
+ GST

Milodon SB Chev 4 Bolt Main Cap Set (MI11165)

350 Journal, Factory 4 Bolt (Straight Side Bolts)

SB CHEV 350 L/J 4 BOLT MAIN350 Journal, Factory 4 Bolt (Straight Side Bolts)Part Number: MI11165 These aftermarket main caps will strengthen not o...

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$752.10 - $752.10
$752.10
$752.10 - $752.10
$752.10
+ GST
Milodon SB Chev 4 Bolt Main Cap Set (MI11160) MI11160
$837.20 - $837.20
$837.20
$837.20 - $837.20
$837.20
+ GST

Milodon SB Chev 4 Bolt Main Cap Set (MI11160)

350 Journal, Factory 4 Bolt (Angled Side Bolts, Wide register 6.200" wide)

SB CHEV 350 L/J 4 BOLT MAIN350 Journal, Factory 4 Bolt (Angled Side Bolts, Wide register 6.200" wide)Part Number: MI11160 These aftermarket main c...

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$837.20 - $837.20
$837.20
$837.20 - $837.20
$837.20
+ GST
Milodon SB Chev 4 Bolt Main Cap Set (MI11050) MI11050
$737.90 - $737.90
$737.90
$737.90 - $737.90
$737.90
+ GST

Milodon SB Chev 4 Bolt Main Cap Set (MI11050)

Suit S/J 283-327 Block, Splayed Caps (3 Caps Only)

SB CHEV 283 327 4 BOLT MAINSuit S/J 283-327 Block, Splayed Caps (3 Caps Only)Part Number: MI11050 These aftermarket main caps will strengthen not ...

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$737.90 - $737.90
$737.90
$737.90 - $737.90
$737.90
+ GST